Question

3×(4x-1)+9-4×(x+1)=4x b) 3x-3/2=3/2x. c)1/6-x/2=-2x/3+1/4= ajuda por favor​

Answer 1

Resposta:

A)

3 * (4x - 1) + 9 - 4 * (x+1) = 4x

12x - 3 +9 - 4x -4 = 4x

12x -4x -4x = 3 - 9 + 4

12x - 8x = -6 + 4

4x = -2

x = 4/2

x = 2

B)

3x - 3/2 = 3/2x

3x - 3/2÷2 = 3/2x÷2

3x - 3/1 = 3/1x

3x - 3 = 3x

3x - 3x = 3

x = 3

C)

1/6 - x/2 = -2x/3 + 1/4 (MMC = 12)

1/12 - x/12 = -2x/12 + 1/12

12 - 12x = -24x + 12

- 12x + 24x = -12 +12

12x = 0

x = 12