Question

What can you multiply to eliminate a variable?

3x + 2y = 22
-x + 4y = 2

(There are multiple options, which ones are possible here?

a. First equation by -2
b. Second equation by -3
c. First equation by 3
d. Second equation by 3

Answer 1

A. First equation by -2

Explanation:

if you multiply the first equation by -2, the -4y cancels 4y