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2.8=b/0.3
We move all terms to the left:
2.8-(b/0.3)=0
We add all the numbers together, and all the variables
-(+b/0.3)+2.8=0
We get rid of parentheses
-b/0.3+2.8=0
We multiply all the terms by the denominator
-b+(2.8)*0.3=0
We add all the numbers together, and all the variables
-1b+0.84=0
We move all terms containing b to the left, all other terms to the right
-b=-0.84
b=-0.84/-1
b=0.84/1
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