-7x-7=-21

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


Simplifying
-7x + -7 = -21

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

Solving
-7 + -7x = -21

Solving for variable 'x'.

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

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

Combine like terms: -7 + 7 = 0
0 + -7x = -21 + 7
-7x = -21 + 7

Combine like terms: -21 + 7 = -14
-7x = -14

Divide each side by '-7'.
x = 2

Simplifying
x = 2

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