Respostas

  • Usuário do Brainly
2013-11-29T18:37:32-02:00
3x + 5 = 23
3x = 23 - 5
3x = 18
x = 18/3
x = 6

U = Q , x = 6

5x - 1 = 14
5x = 14 + 1
5x = 15
x = 15/5
x = 3

U = Q, x = 3
2013-11-29T19:36:51-02:00
3x + 5=23
x=23 - 3 - 5 
x= 15

5x - 1= 14
x= 14 - 5 + 1
x= 10