3s-100=4s-2(10-s)

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Solution for 3s-100=4s-2(10-s) equation: 



3s-100=4s-2(10-s)

We move all terms to the left:

3s-100-(4s-2(10-s))=0

We add all the numbers together, and all the variables

3s-(4s-2(-1s+10))-100=0



We calculate terms in parentheses: -(4s-2(-1s+10)), so:

4s-2(-1s+10)

We multiply parentheses

4s+2s-20

We add all the numbers together, and all the variables

6s-20

Back to the equation:

-(6s-20)



We get rid of parentheses

3s-6s+20-100=0

We add all the numbers together, and all the variables

-3s-80=0

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

-3s=80

s=80/-3

s=-26+2/3

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