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2.2=2s+(-13)
We move all terms to the left:
2.2-(2s+(-13))=0
We calculate terms in parentheses: -(2s+(-13)), so:We get rid of parentheses
2s+(-13)
We add all the numbers together, and all the variables
2s-13
Back to the equation:
-(2s-13)
-2s+13+2.2=0
We add all the numbers together, and all the variables
-2s+15.2=0
We move all terms containing s to the left, all other terms to the right
-2s=-15.2
s=-15.2/-2
s=7+1/1.6666666666667
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