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4.2=b/6
We move all terms to the left:
4.2-(b/6)=0
We add all the numbers together, and all the variables
-(+b/6)+4.2=0
We get rid of parentheses
-b/6+4.2=0
We multiply all the terms by the denominator
-b+(4.2)*6=0
We add all the numbers together, and all the variables
-1b+25.2=0
We move all terms containing b to the left, all other terms to the right
-b=-25.2
b=-25.2/-1
b=25+0.2/1
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