100+87+x=180

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Solution for 100+87+x=180 equation: 


Simplifying
100 + 87 + x = 180

Combine like terms: 100 + 87 = 187
187 + x = 180

Solving
187 + x = 180

Solving for variable 'x'.

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

Add '-187' to each side of the equation.
187 + -187 + x = 180 + -187

Combine like terms: 187 + -187 = 0
0 + x = 180 + -187
x = 180 + -187

Combine like terms: 180 + -187 = -7
x = -7

Simplifying
x = -7

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