7x-6x-21=15x+3-6x

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Solution for 7x-6x-21=15x+3-6x equation:


Simplifying
7x + -6x + -21 = 15x + 3 + -6x

Reorder the terms:
-21 + 7x + -6x = 15x + 3 + -6x

Combine like terms: 7x + -6x = 1x
-21 + 1x = 15x + 3 + -6x

Reorder the terms:
-21 + 1x = 3 + 15x + -6x

Combine like terms: 15x + -6x = 9x
-21 + 1x = 3 + 9x

Solving
-21 + 1x = 3 + 9x

Solving for variable 'x'.

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

Add '-9x' to each side of the equation.
-21 + 1x + -9x = 3 + 9x + -9x

Combine like terms: 1x + -9x = -8x
-21 + -8x = 3 + 9x + -9x

Combine like terms: 9x + -9x = 0
-21 + -8x = 3 + 0
-21 + -8x = 3

Add '21' to each side of the equation.
-21 + 21 + -8x = 3 + 21

Combine like terms: -21 + 21 = 0
0 + -8x = 3 + 21
-8x = 3 + 21

Combine like terms: 3 + 21 = 24
-8x = 24

Divide each side by '-8'.
x = -3

Simplifying
x = -3

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