-6x-18=21-3x

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Solution for -6x-18=21-3x equation:


Simplifying
-6x + -18 = 21 + -3x

Reorder the terms:
-18 + -6x = 21 + -3x

Solving
-18 + -6x = 21 + -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.
-18 + -6x + 3x = 21 + -3x + 3x

Combine like terms: -6x + 3x = -3x
-18 + -3x = 21 + -3x + 3x

Combine like terms: -3x + 3x = 0
-18 + -3x = 21 + 0
-18 + -3x = 21

Add '18' to each side of the equation.
-18 + 18 + -3x = 21 + 18

Combine like terms: -18 + 18 = 0
0 + -3x = 21 + 18
-3x = 21 + 18

Combine like terms: 21 + 18 = 39
-3x = 39

Divide each side by '-3'.
x = -13

Simplifying
x = -13

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