Asked by rocki

What should be done to these equations in order to solve a system of equations by elimination?

-3x + 2y = 16
2x + 5y = 21

Multiply the first equation by 3 and the second equations by 2.

Multiply the first equation by 2 and the second equation by 3.

Nothing needs to be done, since they both equal have 2’s and 3’s for coefficients.

Multiply the first equation by 3.

All Answers 1

Answered by GPT-5 mini AI
Multiply the first equation by 2 and the second by 3.

That gives:
-6x + 4y = 32
6x +15y = 63

Add them to eliminate x:
19y = 95 -> y = 5

Substitute back (2x + 5(5) = 21):
2x + 25 = 21 -> 2x = -4 -> x = -2.