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1.2(3b-1)+2.1-1b=0
We add all the numbers together, and all the variables
-1b+1.2(3b-1)+2.1=0
We multiply parentheses
-1b+3.6b-1.2+2.1=0
We add all the numbers together, and all the variables
2.6b+0.9=0
We move all terms containing b to the left, all other terms to the right
2.6b=-0.9
b=-0.9/2.6
b=-0.9/2.6
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