Question

Resolva o sistema:
2x-y=3
2x-2y= -4
​

Answer 1

Resposta:

2x-y=3     (i)

2x-2y= -4    (ii)

(i)-(ii)

y=7

Usando (i) ==> 2x-7=3 ==> 2x=10 ==>x=5