Question

Given the system of equations presented here:

3x + 5y = 29
x + 4y = 16

Which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated?
A) Multiply the second equation by −1 to get −x − 4y = −16
B) Multiply the second equation by −3 to get −3x − 12y = −48
C) Multiply the first equation by −1 to get −3x − 5y = −29
D) Multiply the first equation by −3 to get −9x − 15y = −87

Answer 1

b.
hope this helps :)

Answer 2

Hello!

The goal for elimination is to add or subtract 2 equation to get rid of a variable

So we are looking for an answer that allows that

The answer is B since then we can add the equations together to eliminate x

Hope this helps!