Question

Resolva as equações:

a) 20x-4=5x

b) 4x=-8x+36

c) 6x-4=2x+8

d) 4x-10=2x+2

Answer 1

a) 20x - 4 = 5x
20x - 5x = 4
15x = 4
x = 4/15

b) 4x = - 8x + 36
4x + 8x = 36
12x = 36
x = 36/12
x = 3

c) 6x - 4 = 2x + 8
6x - 2x = 8 + 4
4x = 12
x = 12/ 4
x = 3

d) 4x - 10 = 2x + 2
4x - 2x = 2 + 10
2x = 12
x = 12/ 2
x = 6