215=7(1+5n)-2

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Solution for 215=7(1+5n)-2 equation: 



215=7(1+5n)-2

We move all terms to the left:

215-(7(1+5n)-2)=0

We add all the numbers together, and all the variables

-(7(5n+1)-2)+215=0



We calculate terms in parentheses: -(7(5n+1)-2), so:

7(5n+1)-2

We multiply parentheses

35n+7-2

We add all the numbers together, and all the variables

35n+5

Back to the equation:

-(35n+5)



We get rid of parentheses

-35n-5+215=0

We add all the numbers together, and all the variables

-35n+210=0

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

-35n=-210

n=-210/-35

n=+6

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