3b=21.b=

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Solution for 3b=21.b= equation:



3b=21.b=
We move all terms to the left:
3b-(21.b)=0
We add all the numbers together, and all the variables
3b-(+21.b)=0
We get rid of parentheses
3b-21.b=0
We add all the numbers together, and all the variables
-18b=0
b=0/-18
b=0

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