Question

Which equation results from adding the equations in this system?

-2 x + y = 8. 5 x - y = -5.

7 x = 13
7 x = 3
3 x = 3
3 x = 13

Answer 1

-2x + y = 8
5x - y = -5
Add regularly
-2x + 5x = 3x
y + (-y) = 0
8 + (-5) = 3

Solution: 3x = 3

Answer 2

i dont know

i am only a kid

but it is 100000000000000

hehe