Best Answer

Let me give you two examples:

One Variable: x * 5 + 2 = 5x + 2

Two Variables: x * 5 + y = 5x + y

If you find out what x is in the first example, you know the answer to the equation. Say x was 23, 23 * 5 + 2 = 117 .

If you find out what x is in the second example, you do not know the answer to the equation.

Say x was 23 again, 23 * 5 + y = 115 + y

You just end up with another equation.

Say y was 23 and you did not know what x was, x * 5 + 23 = 5x + 23

You end up with an equation.

So you have to know x AND y.

So say they were both 23, 23 * 5 + 23 = 138

That is the difference, with one variable, you need to know one variable to figure out the answer.

With two variables, you need to know both to know the answer.

Three variables, all three.

It goes on like that.

I hope I answered your question!

Q: What makes solving an equation with two variables different than one variable?

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The roots of an equation in two variables is calculated by setting the dependent variable, y, equal to 0 and then solving the resulting equation for the independent variable, x. The procedure for solving the equation in x will depend on the nature of the equation.

substitution

You don't use unknown variables to solve an equation. The purpose of solving an equation is to find the value of the variable so that it's no longer unknown.

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It is about finding a value of the variable (or variables) that make the equation a true statement.

The roots of an equation in two variables is calculated by setting the dependent variable, y, equal to 0 and then solving the resulting equation for the independent variable, x. The procedure for solving the equation in x will depend on the nature of the equation.

substitution

It very much depends on the equation. The procedure for solving an equation with just one variable is so very different from the procedure for finding solutions to non-linear equations in several variables.

You don't use unknown variables to solve an equation. The purpose of solving an equation is to find the value of the variable so that it's no longer unknown.

the alikes of solving a one-step or two-step equation: in solving an equation is to have only variables on one side of the equal sign and numbers on the other side of the equal sign. The other alike is to have the number in front of the variable equal to one the variable does not always have to be x. These equations can use any letter as a variable.

An equation is a mathematical statement that may (or may not) be true, defined for some variables. Solving an equation is finding those values of the variables for which the equation or statement is true.

With a formula, you know the variable's value, and you have to calculate the value of the function of it. With an equation, you know the function's value, and you have to calculate the value of the variable.

When an equation has a variable in it (only one), then there are only certainvalues the variable can have that will make the equation a true statement."Solving" the equation means finding those values for the variable.

One linear equation in two variable cannot be solved. It is possible to express either of the two variables in terms of the other but a solution is not possible.One linear equation in two variable cannot be solved. It is possible to express either of the two variables in terms of the other but a solution is not possible.One linear equation in two variable cannot be solved. It is possible to express either of the two variables in terms of the other but a solution is not possible.One linear equation in two variable cannot be solved. It is possible to express either of the two variables in terms of the other but a solution is not possible.

Yes

Isolating a single variable in terms of the rest of the equation provides a solution to that variable. That is, if you know the equation that equals the variable, then you can figure out its value.