Question

3x − 2y = 20 b) { 2x − 2y = 10

Answer 1

Explicación paso a paso:

3-2y=20

-2y=20-3

-2y=17

-y=-17/2

2x-2y=10

2(x-y)=10

x-y=10/2

x-y=5

x=5+y