-18-x-21=72

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Solution for -18-x-21=72 equation:


Simplifying
-18 + -1x + -21 = 72

Reorder the terms:
-18 + -21 + -1x = 72

Combine like terms: -18 + -21 = -39
-39 + -1x = 72

Solving
-39 + -1x = 72

Solving for variable 'x'.

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

Add '39' to each side of the equation.
-39 + 39 + -1x = 72 + 39

Combine like terms: -39 + 39 = 0
0 + -1x = 72 + 39
-1x = 72 + 39

Combine like terms: 72 + 39 = 111
-1x = 111

Divide each side by '-1'.
x = -111

Simplifying
x = -111

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