Solve for x: 3x - 3 - 6x = 12

x = - 5

Step-by-step explanation:

3x - 3 - 6x = 12

group like terms

3x - 6x - 3 = 12

add similar elements

- 3x - 3 = 12

add 3 to both sides

- 3x - 3 + 3 = 12 + 3

simplify

- 3x = 15

divide both sides by 3

- 3x / 5 = 15 / - 3

simplify

x = - 5

  x = -5

Step-by-step explanation:

Collect terms:

  -3x -3 = 12

Divide by -3:

  x +1 = -4

Subtract 1:

  x = -5

The more conventional solution method would be to save the division by -3 until the end. The second step could be to add 3 to both sides. Then you would have ...

  -3x = 15

and dividing by -3 would give the same answer.

answer: (1,3) and (-2,0) i think.