7=3(5x+9)-x

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Solution for 7=3(5x+9)-x equation: 



7=3(5x+9)-x

We move all terms to the left:

7-(3(5x+9)-x)=0



We calculate terms in parentheses: -(3(5x+9)-x), so:

3(5x+9)-x

We add all the numbers together, and all the variables

-1x+3(5x+9)

We multiply parentheses

-1x+15x+27

We add all the numbers together, and all the variables

14x+27

Back to the equation:

-(14x+27)



We get rid of parentheses

-14x-27+7=0

We add all the numbers together, and all the variables

-14x-20=0

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

-14x=20

x=20/-14

x=-1+3/7

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