2(n-7)-7(1+6n)=-21

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Solution for 2(n-7)-7(1+6n)=-21 equation: 



2(n-7)-7(1+6n)=-21

We move all terms to the left:

2(n-7)-7(1+6n)-(-21)=0

We add all the numbers together, and all the variables

2(n-7)-7(6n+1)-(-21)=0

We add all the numbers together, and all the variables

2(n-7)-7(6n+1)+21=0

We multiply parentheses

2n-42n-14-7+21=0

We add all the numbers together, and all the variables

-40n=0

n=0/-40

n=0

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