Question

5) Resolva as seguintes equações a) 6x= 2x + 16 b) 2x-5 = x + 1 c) 2x + 3 = x+4 d) 5x + 7 = 4x + 10 e) 4x - 10 = 2x + 2

Answer 1

a) 6x = 2x + 16

6x - 2x = 16

4x = 16

x = 16/4

x = 4

b) 2x - 5 = x + 1

2x - x = 1 + 5

x = 6

c) 2x + 3 = x + 4

2x - x = 4 - 3

x = 1

d) 5x + 7 = 4x + 10

5x - 4x = 10 - 7

x = 3

e) 4x - 10 = 2x + 2

4x - 2x = 2 + 10

2x = 12

x = 12/2

x = 6