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-1.4-9=3b+3b
We move all terms to the left:
-1.4-9-(3b+3b)=0
We add all the numbers together, and all the variables
-(+6b)-1.4-9=0
We add all the numbers together, and all the variables
-(+6b)-10.4=0
We get rid of parentheses
-6b-10.4=0
We move all terms containing b to the left, all other terms to the right
-6b=10.4
b=10.4/-6
b=-1+1.8333333333333/2.5
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