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Best Answer

x-3=0

so add 3 to both sides to isolate the variable.

x-3=0

+3 | +3

________

x-3+3=o+3

_________

x=3

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Q: How can you use addition to find the variable in subtracting equations?
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What are the ways to solve a system of linear equations in two variables?

the substitution method in which you take each variable and you find out the value and then plug it into the original equation.the adding and subtracting method in which you subtract\add equations to take out a variable and you can figure out what the other variable is. then you also substitute that into that into the original variable


How do you solve simultanious equations?

By eliminating or substituting one of the variables in the two equations in order to find the value of the other variable. When this variable is found then substitute its value into the original equations in order to find the value of the other variable.


How can you find a variable in math?

You find, or construct, an equation or set of equations which express the unknown variable in terms of other variables. Then you solve the equation(s), using algebra.You find, or construct, an equation or set of equations which express the unknown variable in terms of other variables. Then you solve the equation(s), using algebra.You find, or construct, an equation or set of equations which express the unknown variable in terms of other variables. Then you solve the equation(s), using algebra.You find, or construct, an equation or set of equations which express the unknown variable in terms of other variables. Then you solve the equation(s), using algebra.


How do you solve this equations 4x plus 5 equals 13?

4x + 5 = 13. To solve algebraic equations, you need to get the variable by itself on one side of the equation. Start by subtracting 5 from both sides >>> 4x = 8. Then divide both sides by 4 to find what 'x' equals >>> x = 2.


What Compared to diagrams and equations tables are always the best way to find a variable?

True

Related questions

What are the ways to solve a system of linear equations in two variables?

the substitution method in which you take each variable and you find out the value and then plug it into the original equation.the adding and subtracting method in which you subtract\add equations to take out a variable and you can figure out what the other variable is. then you also substitute that into that into the original variable


How do you solve simultanious equations?

By eliminating or substituting one of the variables in the two equations in order to find the value of the other variable. When this variable is found then substitute its value into the original equations in order to find the value of the other variable.


What do you use to solve for the unknown variable?

Equations are used to find the solution to the unknown variable.


How can you find a variable in math?

You find, or construct, an equation or set of equations which express the unknown variable in terms of other variables. Then you solve the equation(s), using algebra.You find, or construct, an equation or set of equations which express the unknown variable in terms of other variables. Then you solve the equation(s), using algebra.You find, or construct, an equation or set of equations which express the unknown variable in terms of other variables. Then you solve the equation(s), using algebra.You find, or construct, an equation or set of equations which express the unknown variable in terms of other variables. Then you solve the equation(s), using algebra.


How do you solve this equations 4x plus 5 equals 13?

4x + 5 = 13. To solve algebraic equations, you need to get the variable by itself on one side of the equation. Start by subtracting 5 from both sides >>> 4x = 8. Then divide both sides by 4 to find what 'x' equals >>> x = 2.


How doI solve system of equations by substitution?

Assuming the simplest case of two equations in two variable: solve one of the equations for one of the variables. Substitute the value found for the variable in all places in which the variable appears in the second equation. Solve the resulting equation. This will give you the value of one of the variables. Finally, replace this value in one of the original equations, and solve, to find the other variable.


What Compared to diagrams and equations tables are always the best way to find a variable?

True


Does it matter if you substitute the vaule in either equations to find the value of the other variable?

Not if they are consistent.


How do you find equivalent rate?

You set the two equations equal to each other and then solve for the variable.


How do you solve a system of equations by graphing?

Write each equations in popular form. ... Make the coefficients of one variable opposites. ... Add the equations ensuing from Step two to remove one variable. Solve for the last variable. Substitute the answer from Step four into one of the unique equations.


How did you find each product of quadratic equations?

You substitute the value of the variable into the quadratic equation and evaluate the expression.


How do you work out missing number addition if the bottom number is smaller than the top number?

you find out missing numbers in addition by subtracting the numbers that are writen