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3 years ago

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

Mathematics

2 answers:

fredd [130]3 years ago

7 0

Answer:

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.

Natalka [10]3 years ago

3 0

Answer:

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

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3 years ago

Solve for x: 3x - 3 - 6x = 12​

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