Question

Contas:

A) 7 (x-2) = 5 (x+3)

B) 2(x-5) +4(x-1) = 0

C) 3(2x-1) = -2 (x+3)

Answer 1

a) 7x-14 = 5x+15

7x-5x = 15+14

2x = 29

x = 29/2 ou 14,5

b) 2x-10+4x-4 = 0

6x-14 = 0

6x = 14

x = 14/6

x = 7/3

c) 6x-3 = -2x-6

6x+2x = -6+3

8x = -3

x = - 8/3