90+45+x=180

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Solution for 90+45+x=180 equation: 


Simplifying
90 + 45 + x = 180

Combine like terms: 90 + 45 = 135
135 + x = 180

Solving
135 + x = 180

Solving for variable 'x'.

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

Add '-135' to each side of the equation.
135 + -135 + x = 180 + -135

Combine like terms: 135 + -135 = 0
0 + x = 180 + -135
x = 180 + -135

Combine like terms: 180 + -135 = 45
x = 45

Simplifying
x = 45

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