Question

resolva as equações:
a) -9x+8=-43

b) 0=11x-4

c)-4=2-3x

d) 4=2x+4

Answer 1

a) - 9x + 8 = - 43
     8 + 43 = 9x
      51 = 9x
        x = 51/9

b) 0 = 11x - 4
       4 = 11x
       x = 4/11

c) - 4 = 2 - 3x
     3x = 2 + 4
      3x = 6
       x = 6/3
       x = 2

d) 4 = 2x + 4
    2x = 4 - 4
    2x = 0
    x = 0/2
    x = 0

Answer 2

Resposta:

A)

- 9x + 8 = - 43

- 9x = - 43 - 8

- 9x = - 51

x = - 51/-9

x = 51/9

x = 51÷3/9÷3

x = 17/3

B)

0 = 11x - 4

- 11x = - 4

x = - 4/-11

x = 4/11

C)

- 4 = 2 - 3x

3x = 2 + 4

3x = 6

x = 6/3

x = 2

D)

4 = 2x + 4

0 = 2x

2x = 0

x = 0/2

x = 0