31-7s=4(2s+3)

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Solution for 31-7s=4(2s+3) equation: 



31-7s=4(2s+3)

We move all terms to the left:

31-7s-(4(2s+3))=0



We calculate terms in parentheses: -(4(2s+3)), so:

4(2s+3)

We multiply parentheses

8s+12

Back to the equation:

-(8s+12)



We get rid of parentheses

-7s-8s-12+31=0

We add all the numbers together, and all the variables

-15s+19=0

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

-15s=-19

s=-19/-15

s=1+4/15

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