22+7n=21n+-2(4n+-2)

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Solution for 22+7n=21n+-2(4n+-2) equation: 



22+7n=21n+-2(4n+-2)

We move all terms to the left:

22+7n-(21n+-2(4n+-2))=0

We add all the numbers together, and all the variables

7n-(21n+-2(4n-2))+22=0

We use the square of the difference formula

7n-(21n-2(4n-2))+22=0



We calculate terms in parentheses: -(21n-2(4n-2)), so:

21n-2(4n-2)

We multiply parentheses

21n-8n+4

We add all the numbers together, and all the variables

13n+4

Back to the equation:

-(13n+4)



We get rid of parentheses

7n-13n-4+22=0

We add all the numbers together, and all the variables

-6n+18=0

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

-6n=-18

n=-18/-6

n=+3

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