91+x=80

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Solution for 91+x=80 equation: 


Simplifying
91 + x = 80

Solving
91 + x = 80

Solving for variable 'x'.

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

Add '-91' to each side of the equation.
91 + -91 + x = 80 + -91

Combine like terms: 91 + -91 = 0
0 + x = 80 + -91
x = 80 + -91

Combine like terms: 80 + -91 = -11
x = -11

Simplifying
x = -11

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