126=-3(5n-7)

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Solution for 126=-3(5n-7) equation: 



126=-3(5n-7)

We move all terms to the left:

126-(-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

15n-21+126=0

We add all the numbers together, and all the variables

15n+105=0

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

15n=-105

n=-105/15

n=-7

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