20x+x=180

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Solution for 20x+x=180 equation: 


Simplifying
20x + x = 180

Combine like terms: 20x + x = 21x
21x = 180

Solving
21x = 180

Solving for variable 'x'.

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

Divide each side by '21'.
x = 8.571428571

Simplifying
x = 8.571428571

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