20s+20-2s=7(4s-20)

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Solution for 20s+20-2s=7(4s-20) equation: 



20s+20-2s=7(4s-20)

We move all terms to the left:

20s+20-2s-(7(4s-20))=0

We add all the numbers together, and all the variables

18s-(7(4s-20))+20=0



We calculate terms in parentheses: -(7(4s-20)), so:

7(4s-20)

We multiply parentheses

28s-140

Back to the equation:

-(28s-140)



We get rid of parentheses

18s-28s+140+20=0

We add all the numbers together, and all the variables

-10s+160=0

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

-10s=-160

s=-160/-10

s=+16

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