21(s-14)=7(s+18)

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Solution for 21(s-14)=7(s+18) equation: 



21(s-14)=7(s+18)

We move all terms to the left:

21(s-14)-(7(s+18))=0

We multiply parentheses

21s-(7(s+18))-294=0



We calculate terms in parentheses: -(7(s+18)), so:

7(s+18)

We multiply parentheses

7s+126

Back to the equation:

-(7s+126)



We get rid of parentheses

21s-7s-126-294=0

We add all the numbers together, and all the variables

14s-420=0

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

14s=420

s=420/14

s=30

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