20=4(s+3)

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Solution for 20=4(s+3) equation: 



20=4(s+3)

We move all terms to the left:

20-(4(s+3))=0



We calculate terms in parentheses: -(4(s+3)), so:

4(s+3)

We multiply parentheses

4s+12

Back to the equation:

-(4s+12)



We get rid of parentheses

-4s-12+20=0

We add all the numbers together, and all the variables

-4s+8=0

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

-4s=-8

s=-8/-4

s=+2

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