1+5n=3(5n+7)

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Solution for 1+5n=3(5n+7) equation: 



1+5n=3(5n+7)

We move all terms to the left:

1+5n-(3(5n+7))=0



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

3(5n+7)

We multiply parentheses

15n+21

Back to the equation:

-(15n+21)



We get rid of parentheses

5n-15n-21+1=0

We add all the numbers together, and all the variables

-10n-20=0

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

-10n=20

n=20/-10

n=-2

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