-7x-6=2x+21

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Solution for -7x-6=2x+21 equation:


Simplifying
-7x + -6 = 2x + 21

Reorder the terms:
-6 + -7x = 2x + 21

Reorder the terms:
-6 + -7x = 21 + 2x

Solving
-6 + -7x = 21 + 2x

Solving for variable 'x'.

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

Add '-2x' to each side of the equation.
-6 + -7x + -2x = 21 + 2x + -2x

Combine like terms: -7x + -2x = -9x
-6 + -9x = 21 + 2x + -2x

Combine like terms: 2x + -2x = 0
-6 + -9x = 21 + 0
-6 + -9x = 21

Add '6' to each side of the equation.
-6 + 6 + -9x = 21 + 6

Combine like terms: -6 + 6 = 0
0 + -9x = 21 + 6
-9x = 21 + 6

Combine like terms: 21 + 6 = 27
-9x = 27

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

Simplifying
x = -3

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