12-15=-3x

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Solution for 12-15=-3x equation:


Simplifying
12 + -15 = -3x

Combine like terms: 12 + -15 = -3
-3 = -3x

Solving
-3 = -3x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '3x' to each side of the equation.
-3 + 3x = -3x + 3x

Combine like terms: -3x + 3x = 0
-3 + 3x = 0

Add '3' to each side of the equation.
-3 + 3 + 3x = 0 + 3

Combine like terms: -3 + 3 = 0
0 + 3x = 0 + 3
3x = 0 + 3

Combine like terms: 0 + 3 = 3
3x = 3

Divide each side by '3'.
x = 1

Simplifying
x = 1

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