Question

2(x+y) = 5(x-y)
x/2 - y = 2​

Answer 1

Resposta:

2x + 2y = 5x - 5y

2x - 5x = - 5y - 2y

-3x = -7y

x = 7y

3

x - y = 2 >> 7y - y = 2 >> 7y x 2 - y = 2

2 3 3

2

y = 6

11