4-x=5+7x

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Solution for 4-x=5+7x equation: 



4-x=5+7x

We move all terms to the left:

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

We add all the numbers together, and all the variables

-x-(7x+5)+4=0

We add all the numbers together, and all the variables

-1x-(7x+5)+4=0

We get rid of parentheses

-1x-7x-5+4=0

We add all the numbers together, and all the variables

-8x-1=0

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

-8x=1

x=1/-8

x=-1/8

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