Question

x - y=75 e x + 8= y + 7 qual a resposta??​

Answer 1

Resposta:

l-×+y=75 ll-×-8=y+7 l-×+y=75 ×=75-y ll-×-8=y+7 75-y-8=y+7-y-y=7-75-2y=68y=68/2y=34-×=75-y×=75-34×=41 espero que esteja certo