Question

a) x - 3 = 9 b) 4x - 9 = 1 - 2x c) x + 5 = 20 - 4x d) 9x - 4x + 10 = 7x – 30 e) 4x + 2 = 16 f) 4x = 10 – 2 g)-3x = -9 h) 80x + 96 = 105

Answer 1

Resposta:

a) x - 3 = 9

x = 9 + 3

x = 12

b) 4x - 9 = 1 - 2x

4x + 2x = 1 + 9

6x = 10

x = 6/10

c) x + 5 = 20 - 4x

x + 4x = 20 - 5

5x = 15

x = 15/5

x = 3

d)9x - 4x + 10 = 7x -30

5x - 7x = - 30 - 10

2x = -40

x = 40/2

x = 20

e) 4x + 2 = 16

4x = 16 - 2

4x = 14

x = 14/4

f) 4x = 10 - 2

4x = 8

x = 8/4

x = 2

g) -3x = -9

x = -9/-3

x = 3

h) 80x + 96 = 105

80x = 105 - 96

80x = 9

x = 9/80

Espero ter ajudado :)