a)8x + 8 = 2x –4
b)x + 77 = --4x – 3
c)2x +6 = x –5
d)9x + 28 = 4x – 7
e)4x + 14 = x – 7
f)x --4 = 4x +26
g)5x + 80 = 4x – 7
h)3x + 80 = x+20
i)10x + 80 = 4x +140
Soluções para a tarefa
Resposta:Segue as contas abaixo na explicação
Explicação passo-a-passo:
a)8x + 8 = 2x –4 b)x + 77 = -4x – 3 c)2x +6 = x –5 d)9x + 28 = 4x – 7
8x-2x=-4-8 x+4x=-3-77 2x-x=-5-6 9x-4x=-7-28
6x=-12 5x=-80 x=-11 5x=-35
x=-12/6 x=-80/5 x=-35/5
x=-2 x=-16 x=-7
e)4x + 14 = x – 7 f)x -4 = 4x +26 g)5x + 80 = 4x – 7
4x-x=-7-14 x-4x=26+4 5x-4x=-7-80
3x=-21 -3x=30 x=-87
x=-21/7 x=30/-3
x=-3 x=-10
h)3x + 80 = x+20 i)10x + 80 = 4x +140
3x-x=20-80 10x-4x=140-80
2x=-60 6x=60
x=-60/2 x=60/6
x=-30 x=10