-21-x=15

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Solution for -21-x=15 equation: 


Simplifying
-21 + -1x = 15

Solving
-21 + -1x = 15

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 + -1x = 15 + 21

Combine like terms: -21 + 21 = 0
0 + -1x = 15 + 21
-1x = 15 + 21

Combine like terms: 15 + 21 = 36
-1x = 36

Divide each side by '-1'.
x = -36

Simplifying
x = -36

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