You are given two equations which are both true, and you are asked to solve for both x and y. You plan to solve this set of equations by substituting part of one equation into the other so you end up with an equation that contains only x's or only y's. The first thing you need to do in this procedure is to______?

Question

You are given two equations which are both true, and you are asked to solve for both x and y. You plan to solve this set of equations by substituting part of one equation into the other so you end up with an equation that contains only x's or only y's. The first thing you need to do in this procedure is to______?

a. rearrange one of the equations so
that either x or y is alone on one
side of the equals sign.
b. add the total number of x's and y's
in both equations
C. make sure that all x's and y's have
a numberical coefficient greater
than 1.
D. cross multiply

I believe the answer is A

Answer 1

L0L U G0T DHA ANSWER C0RRECT 0N DHAAA ZIST TRHY

Answer 2

Yes, you are correct. The first step in solving a set of equations by substituting part of one equation into the other is to rearrange one of the equations so that either x or y is alone on one side of the equals sign. This allows you to substitute that expression into the other equation and simplify the equation to only contain x's or only y's. This step is called isolating a variable and it is a fundamental part of solving systems of equations.