180-220=x

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Solution for 180-220=x equation:


Simplifying
180 + -220 = x

Combine like terms: 180 + -220 = -40
-40 = x

Solving
-40 = x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
-40 + -1x = x + -1x

Combine like terms: x + -1x = 0
-40 + -1x = 0

Add '40' to each side of the equation.
-40 + 40 + -1x = 0 + 40

Combine like terms: -40 + 40 = 0
0 + -1x = 0 + 40
-1x = 0 + 40

Combine like terms: 0 + 40 = 40
-1x = 40

Divide each side by '-1'.
x = -40

Simplifying
x = -40

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