7s-4=86-3s

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Solution for 7s-4=86-3s equation: 



7s-4=86-3s

We move all terms to the left:

7s-4-(86-3s)=0

We add all the numbers together, and all the variables

7s-(-3s+86)-4=0

We get rid of parentheses

7s+3s-86-4=0

We add all the numbers together, and all the variables

10s-90=0

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

10s=90

s=90/10

s=9

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