Respostas

2013-10-07T18:05:04-03:00
Comece multiplicando cruzado:
3(2x-7)= 5(x+2)
6x-21=5x+10
6x-5x=10+21
x=31
8 4 8
  • Usuário do Brainly
2013-10-08T03:08:40-03:00
5.(x + 2) = 3.(2x - 7)
5x + 10 = 6x - 21
5x - 6x = - 21 - 10
- x = - 31 .(-1)
x = 31
1 5 1