123=7n+5(7+3n)

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Solution for 123=7n+5(7+3n) equation: 



123=7n+5(7+3n)

We move all terms to the left:

123-(7n+5(7+3n))=0

We add all the numbers together, and all the variables

-(7n+5(3n+7))+123=0



We calculate terms in parentheses: -(7n+5(3n+7)), so:

7n+5(3n+7)

We multiply parentheses

7n+15n+35

We add all the numbers together, and all the variables

22n+35

Back to the equation:

-(22n+35)



We get rid of parentheses

-22n-35+123=0

We add all the numbers together, and all the variables

-22n+88=0

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

-22n=-88

n=-88/-22

n=+4

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