77=7x+5x-7

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Solution for 77=7x+5x-7 equation: 



77=7x+5x-7

We move all terms to the left:

77-(7x+5x-7)=0

We add all the numbers together, and all the variables

-(12x-7)+77=0

We get rid of parentheses

-12x+7+77=0

We add all the numbers together, and all the variables

-12x+84=0

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

-12x=-84

x=-84/-12

x=+7

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