-7x-15=21-6x

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Solution for -7x-15=21-6x equation:


Simplifying
-7x + -15 = 21 + -6x

Reorder the terms:
-15 + -7x = 21 + -6x

Solving
-15 + -7x = 21 + -6x

Solving for variable 'x'.

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

Add '6x' to each side of the equation.
-15 + -7x + 6x = 21 + -6x + 6x

Combine like terms: -7x + 6x = -1x
-15 + -1x = 21 + -6x + 6x

Combine like terms: -6x + 6x = 0
-15 + -1x = 21 + 0
-15 + -1x = 21

Add '15' to each side of the equation.
-15 + 15 + -1x = 21 + 15

Combine like terms: -15 + 15 = 0
0 + -1x = 21 + 15
-1x = 21 + 15

Combine like terms: 21 + 15 = 36
-1x = 36

Divide each side by '-1'.
x = -36

Simplifying
x = -36

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