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-15=2.7b
We move all terms to the left:
-15-(2.7b)=0
We add all the numbers together, and all the variables
-(+2.7b)-15=0
We get rid of parentheses
-2.7b-15=0
We move all terms containing b to the left, all other terms to the right
-2.7b=15
b=15/-2.7
b=-5+1/1.8
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