Question

3x+2y=30
3x-y=21
What’s the answer!

Answer 1

Explanation:

3x+2y=30

i will multiply the second equation by -1

-3x+y=-21

3x+2y=30

3y=9

y=3

replace y in the first equation

3x+6=30

3x=30-6

3x=24

x=8