Question

X−7y=3
8x+7y=6

9x = ?

Answer 1

9

Explanation:

x−7y=3

8x+7y=6

We will be doing the elimination process, and since there is -7y and 7y, we can cancel them.

x=3

8x=6

add

9x=9

x=1

Answer 2

8x = 6 - 7y
x = 7y + 3
9x = 6 - 7y + 7y + 3 = 9