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-2b=3.4
We move all terms to the left:
-2b-(3.4)=0
We add all the numbers together, and all the variables
-2b-3.4=0
We move all terms containing b to the left, all other terms to the right
-2b=3.4
b=3.4/-2
b=-1+1/1.4285714285714
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