3(+9)=7(x+6)+13

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Solution for 3(+9)=7(x+6)+13 equation: 



3(+9)=7(x+6)+13

We move all terms to the left:

3(+9)-(7(x+6)+13)=0

We add all the numbers together, and all the variables

-(7(x+6)+13)+39=0



We calculate terms in parentheses: -(7(x+6)+13), so:

7(x+6)+13

We multiply parentheses

7x+42+13

We add all the numbers together, and all the variables

7x+55

Back to the equation:

-(7x+55)



We get rid of parentheses

-7x-55+39=0

We add all the numbers together, and all the variables

-7x-16=0

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

-7x=16

x=16/-7

x=-2+2/7

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