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-3.6b-72=-12.7-6.1b
We move all terms to the left:
-3.6b-72-(-12.7-6.1b)=0
We add all the numbers together, and all the variables
-3.6b-(-6.1b-12.7)-72=0
We get rid of parentheses
-3.6b+6.1b+12.7-72=0
We add all the numbers together, and all the variables
2.5b-59.3=0
We move all terms containing b to the left, all other terms to the right
2.5b=59.3
b=59.3/2.5
b=23+1/1.3888888888889
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