12=7x+45x

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Solution for 12=7x+45x equation: 



12=7x+45x

We move all terms to the left:

12-(7x+45x)=0

We add all the numbers together, and all the variables

-(+52x)+12=0

We get rid of parentheses

-52x+12=0

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

-52x=-12

x=-12/-52

x=3/13

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