x+12x=90

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Solution for x+12x=90 equation: 


Simplifying
x + 12x = 90

Combine like terms: x + 12x = 13x
13x = 90

Solving
13x = 90

Solving for variable 'x'.

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

Divide each side by '13'.
x = 6.923076923

Simplifying
x = 6.923076923

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