Respostas

2013-11-03T12:54:24-02:00
7x + y = 50, sendo y = 1
7x + 1 = 50
7x = 50 - 1
7x = 49
x = 49 / 7
x = 7
3 5 3
  • Usuário do Brainly
2013-11-03T13:06:41-02:00
7x+y= 50   y=1
7x+1=50
7x=50-1
7x=49
x=49/7
x= 7
Quando y for igual a 1,x será 7.

Espero ter ajudado'