147=-3(7-7n)

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Solution for 147=-3(7-7n) equation: 



147=-3(7-7n)

We move all terms to the left:

147-(-3(7-7n))=0

We add all the numbers together, and all the variables

-(-3(-7n+7))+147=0



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

-3(-7n+7)

We multiply parentheses

21n-21

Back to the equation:

-(21n-21)



We get rid of parentheses

-21n+21+147=0

We add all the numbers together, and all the variables

-21n+168=0

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

-21n=-168

n=-168/-21

n=+8

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