-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 = -5x
-6 + -5x = -21 + -2x + 2x

Combine like terms: -2x + 2x = 0
-6 + -5x = -21 + 0
-6 + -5x = -21

Add '6' to each side of the equation.
-6 + 6 + -5x = -21 + 6

Combine like terms: -6 + 6 = 0
0 + -5x = -21 + 6
-5x = -21 + 6

Combine like terms: -21 + 6 = -15
-5x = -15

Divide each side by '-5'.
x = 3

Simplifying
x = 3

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