-7x-21=-126

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Solution for -7x-21=-126 equation: 


Simplifying
-7x + -21 = -126

Reorder the terms:
-21 + -7x = -126

Solving
-21 + -7x = -126

Solving for variable 'x'.

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

Add '21' to each side of the equation.
-21 + 21 + -7x = -126 + 21

Combine like terms: -21 + 21 = 0
0 + -7x = -126 + 21
-7x = -126 + 21

Combine like terms: -126 + 21 = -105
-7x = -105

Divide each side by '-7'.
x = 15

Simplifying
x = 15

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