-3x-6=-15

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Solution for -3x-6=-15 equation: 


Simplifying
-3x + -6 = -15

Reorder the terms:
-6 + -3x = -15

Solving
-6 + -3x = -15

Solving for variable 'x'.

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

Add '6' to each side of the equation.
-6 + 6 + -3x = -15 + 6

Combine like terms: -6 + 6 = 0
0 + -3x = -15 + 6
-3x = -15 + 6

Combine like terms: -15 + 6 = -9
-3x = -9

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

Simplifying
x = 3

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