5x-81=12x+45

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Solution for 5x-81=12x+45 equation: 



5x-81=12x+45

We move all terms to the left:

5x-81-(12x+45)=0

We get rid of parentheses

5x-12x-45-81=0

We add all the numbers together, and all the variables

-7x-126=0

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

-7x=126

x=126/-7

x=-18

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