Question

alguem faz os cálculos pra mim ? urgente ​

Answer 1

Resposta:

1.

x - x/3 = 6 + x/2

x - x/3 - x/2 = 6

6x/6 - 2x/3 - 3x/2 = 6

x/6 = 6

x = 6 . 6

x = 36

2.

2x + 5-x = 3 - 3.(x+2)

2x + 5 - x = 3 - 3x - 6

2x - x + 3x = - 5 + 3 - 6

4x = -8

x = -8/4

x = -2

3.

x + 3.(x-1) - 2 - 3.(x-3) = 0

x + 3x - 3 - 2 - 3x + 9 = 0

x + 3x - 3x = - 9 + 2 + 3

x = -4

4.

4.(x-2) - 2(x+1) = 4

4x - 8 - 2x - 2 = 4

4x - 2x = +8 +2 +4

2x = 14

x = 14/2

x = 7

5.

6x - 4.(x-5) - 5(5-3x) = 0

6x - 4x + 20 - 25 + 15x = 0

6x - 4x + 15x = -20 + 25

17x = 5

x = 5/17

6.

2x/9 + 1/6 = 4x/3 + 1/2

2x/9 - 4x/3 = - 1/6 + 1/2

2x/9 - 12x/9 = - 1/6 + 3/6

-10x/9 = 2/6

x = ((2/6)/-10).9

x = -18/60

x = -3/10