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Reese Lebsack

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3y ago
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8y ago

You work with fractions!

For example, if one the equation in a problem involving two equations were

2x + 3y = 5 then it can be re-written as 2x = 5 - 3y so that x = (5 - 3y)/2 or 5/2 - 3y/2


Use one of those forms in the other equation.

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Q: How can you use substitution method to solve a system of equations that does not have a variable with a coefficient of 1 or -1?
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Related questions

When using the substitution method to solve a nonlinear system of equations you should first see if you can one variable in one of the equations in the system?

isolate


With the substitution method which variable should you solve for first?

It often doesn't matter which one you solve for first. But if you can easily solve one of the equations for one of the variables, that's the one you should solve for.


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


Why is substitution the best method in solving systems of equations?

It is not always the best method, sometimes elimination is the way you should solve systems. It is best to use substitution when you havea variable isolated on one side


How do you decide whether to use elimination or subsitution to solve a three-variable system?

There is no simple answer. Sometimes, the nature of one of the equations lends itself to the substitution method but at other times, elimination is better. If they are non-linear equations, and there is an easy substitution then that is the best approach. With linear equations, using the inverse matrix is the fastest method.


When solving by the substitution method what happens when one variable cancels out?

That's exactly the purpose of the substitution method ... to get an equation with one less variable. When you have it, you solve it for the variable that's left.


Use the substitution method to solve the system of equations Enter your answer as an ordered pair?

Use the substitution method to solve the system of equations. Enter your answer as an ordered pair.y = 2x + 5 x = 1


What is the disadvantage of using the substitution method in solving linear equations rather than the graph method?

There are no disadvantages. There are three main ways to solve linear equations which are: substitution, graphing, and elimination. The method that is most appropriate can be found by looking at the equation.


How do you find the solution set of pair linear equations?

By the substitution method By the elimination method By plotting them on a graph


How do you use different techniques to solve linear equations?

There are several techniques to solve linear equations. One common technique is the elimination method, where you eliminate one variable by adding or subtracting equations. Another technique is substitution, where you solve one equation for a variable and substitute it into the other equation. You can also use matrices and row operations to solve linear equations.


What is the advantage that the method od substitution has over the graphing method of solving system of equations?

Substitution is a way to solve without graphing, and sometimes there are equations that are impossible or very difficult to graph that are easier to just substitute. Mostly though, it is a way to solve if you have no calculator or cannot use one (for a test or worksheet).


What is a method used to solve systems of equations in which the solution is the point where the lines intersect?

there are three methods: combination, substitution and decomposition.