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11=3s-2.75+.75s
We move all terms to the left:
11-(3s-2.75+.75s)=0
We add all the numbers together, and all the variables
-(3.75s-2.75)+11=0
We get rid of parentheses
-3.75s+2.75+11=0
We add all the numbers together, and all the variables
-3.75s+13.75=0
We move all terms containing s to the left, all other terms to the right
-3.75s=-13.75
s=-13.75/-3.75
s=3+2.5/3.75
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