a) 4 + x = 0 b) 23x + 2 = 25
c) 12 – 7 + 4x = 25 d) 5x – 2x = 30
e) 4x + 10 = 45 – 3x f) 2.(4 + 3x) = 26
Respostas
Resposta:
A) x = 4 B) x = 1 C) x = 5 D) x = 10 E) x = 5 F)x = 3
Explicação passo a passo:
a) 4 + x = 0 b) 23x + 2 = 25 c) 12 – 7 + 4x = 25
x = 0 + 4 23x = 25 - 2 4x = 25 - 12 + 7
x = +4 23x = 23 4x = 20
x = 23/23 = 1 x = 20/4 = 5
d) 5x – 2x = 30 e) 4x + 10 = 45 – 3x f) 2.(4 + 3x) = 26
3x = 30 4x + 3x = 45 - 10 8 + 6x = 26
x = 30/3 = 10 7x = 35 6x = 26 - 8
x = 35/7 = 5 6x = 18
x = 18/6 = 3