-3+15=3x-15

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Solution for -3+15=3x-15 equation: 


Simplifying
-3 + 15 = 3x + -15

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

Reorder the terms:
12 = -15 + 3x

Solving
12 = -15 + 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.
12 + -3x = -15 + 3x + -3x

Combine like terms: 3x + -3x = 0
12 + -3x = -15 + 0
12 + -3x = -15

Add '-12' to each side of the equation.
12 + -12 + -3x = -15 + -12

Combine like terms: 12 + -12 = 0
0 + -3x = -15 + -12
-3x = -15 + -12

Combine like terms: -15 + -12 = -27
-3x = -27

Divide each side by '-3'.
x = 9

Simplifying
x = 9

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