Respostas

  • Usuário do Brainly
2013-11-10T18:00:10-02:00
H) x - 5 = - 3x + 2
x + 3x = 2 + 5
4x = 7
x = 7/4

J) 4x - 25 = 2x - 15
4x - 2x = - 15 + 25
2x = 10
x = 10/2
x = 5

K) 8x = 40
x = 40/8
x = 5
1 5 1
2013-11-10T18:03:24-02:00
H) x - 5 = - 3x + 2
x + 3x = 2 + 5
4x = 7
x = 7 : 4
x = 1,75

J) 4x - 25 = 2x - 15
4x - 2x = - 15 + 25
2x = 10
x = 10 : 2
x = 5

K) 8x = 40
x = 40 : 8
x = 5