7(3+x)-x=25+7x

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Solution for 7(3+x)-x=25+7x equation: 



7(3+x)-x=25+7x

We move all terms to the left:

7(3+x)-x-(25+7x)=0

We add all the numbers together, and all the variables

7(x+3)-x-(7x+25)=0

We add all the numbers together, and all the variables

-1x+7(x+3)-(7x+25)=0

We multiply parentheses

-1x+7x-(7x+25)+21=0

We get rid of parentheses

-1x+7x-7x-25+21=0

We add all the numbers together, and all the variables

-1x-4=0

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

-x=4

x=4/-1

x=-4

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