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1.3b+1.5=5.4
We move all terms to the left:
1.3b+1.5-(5.4)=0
We add all the numbers together, and all the variables
1.3b-3.9=0
We move all terms containing b to the left, all other terms to the right
1.3b=3.9
b=3.9/1.3
b=3+-4.4408920985E-16/1.3
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