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3(2.1b-1.2)=4(0.76+0.85)
We move all terms to the left:
3(2.1b-1.2)-(4(0.76+0.85))=0
We add all the numbers together, and all the variables
3(2.1b-1.2)-(4(1.61))=0
We add all the numbers together, and all the variables
3(2.1b-1.2)-6.44=0
We multiply parentheses
6b-3.6-6.44=0
We add all the numbers together, and all the variables
6b-10.04=0
We move all terms containing b to the left, all other terms to the right
6b=10.04
b=10.04/6
b=1+1.9803921568627/2.9411764705882
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