3(1-2n)=21+n

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Solution for 3(1-2n)=21+n equation: 



3(1-2n)=21+n

We move all terms to the left:

3(1-2n)-(21+n)=0

We add all the numbers together, and all the variables

3(-2n+1)-(n+21)=0

We multiply parentheses

-6n-(n+21)+3=0

We get rid of parentheses

-6n-n-21+3=0

We add all the numbers together, and all the variables

-7n-18=0

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

-7n=18

n=18/-7

n=-2+4/7

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