Question

Resolva as equações abaixo:

a) 2x+500=1100

b) 5(3x - 2) = 2(6x + 3)

c) 3(x + 2) + 5 = x + 12

Answer 1

a)X=300

b)X=16/3

C)x=1/2

Answer 2

a) 2x= 1100 - 500
2x = 600
x = 600/2
x = 300

b) 5 (3x - 2) = 2 (6x + 3)
15x - 10 = 12x + 6
15x - 12x = 10 + 6
3x = 16
x = 16/3

c) 3 (x + 2) + 5 = x + 12
3x + 6 + 5 = x + 12
3x + 11 = x + 12
3x - x = 12 - 11
2x = 1
x = 1/2