9=1+7x+5x

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Solution for 9=1+7x+5x equation: 



9=1+7x+5x

We move all terms to the left:

9-(1+7x+5x)=0

We add all the numbers together, and all the variables

-(12x+1)+9=0

We get rid of parentheses

-12x-1+9=0

We add all the numbers together, and all the variables

-12x+8=0

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

-12x=-8

x=-8/-12

x=2/3

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