-7-x=-21

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Solution for -7-x=-21 equation: 


Simplifying
-7 + -1x = -21

Solving
-7 + -1x = -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 + -1x = -21 + 7

Combine like terms: -7 + 7 = 0
0 + -1x = -21 + 7
-1x = -21 + 7

Combine like terms: -21 + 7 = -14
-1x = -14

Divide each side by '-1'.
x = 14

Simplifying
x = 14

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