5x+7x+x=91

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Solution for 5x+7x+x=91 equation: 


Simplifying
5x + 7x + x = 91

Combine like terms: 5x + 7x = 12x
12x + x = 91

Combine like terms: 12x + x = 13x
13x = 91

Solving
13x = 91

Solving for variable 'x'.

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

Divide each side by '13'.
x = 7

Simplifying
x = 7

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