138+90+x=180

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Solution for 138+90+x=180 equation: 


Simplifying
138 + 90 + x = 180

Combine like terms: 138 + 90 = 228
228 + x = 180

Solving
228 + x = 180

Solving for variable 'x'.

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

Add '-228' to each side of the equation.
228 + -228 + x = 180 + -228

Combine like terms: 228 + -228 = 0
0 + x = 180 + -228
x = 180 + -228

Combine like terms: 180 + -228 = -48
x = -48

Simplifying
x = -48

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