91+x=3x-45

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Solution for 91+x=3x-45 equation: 



91+x=3x-45

We move all terms to the left:

91+x-(3x-45)=0

We get rid of parentheses

x-3x+45+91=0

We add all the numbers together, and all the variables

-2x+136=0

We move all terms containing x to the left, all other terms to the right

-2x=-136

x=-136/-2

x=+68

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