Question

1. Resolva as equações: a) 2x + 8 = - 24 b) 4x – 2x + x -5 = 10 c) 10x + 6 = 4x + 20

Answer 1

a) 2x + 8 = -24

2x = -24 - 8

2x = -32

x = -32/2

x = -16

b) 4x - 2x + x - 5 = 10

2x + x - 5 = 10

3x - 5 = 10

3x = 10 + 5

3x = 15

x = 15/3

x = 5

c) 10x + 6 = 4x + 20

10x - 4x + 6 = 20

6x + 6 = 20

6x = 20 - 6

6x = 14

x = 14/6

x = 7/3