Question

Respova as equaçoes
a) 2x+30= -40
b) 8x+10=5x+70
c) 12x+40= 6x-32
d) 4x+3(2x+10)=2x-50

Answer 1

Olá

a) 2x + 30 = - 40

2x = - 40 - 30

2x = -70

x = - 70/2 ÷ 2

x = - 35

Resposta: x = - 35

b) 8x + 10 = 5x + 70

8x - 5x = 70 - 10

3x = 60

x = 60/3 ÷ 3

x = 20

Resposta: x = 20

c) 12x + 40 = 6x - 32

12x - 6x = -32 - 40

6x = - 72

x = - 72/6 ÷ 6

x = - 12

Resposta: x = - 12

d) 4x + 3(2x+10) = 2x -50

4x + 6x + 30 = 2x - 50

4x + 6x -2x = -50 - 30

8x = - 80

x = - 80/8 ÷ 8

x = - 10

Resposta: - 10

Bons estudos.