20b=12b+7.5X=30

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Solution for 20b=12b+7.5X=30 equation: 



20b=12b+7.5b=30

We move all terms to the left:

20b-(12b+7.5b)=0

We add all the numbers together, and all the variables

20b-(+19.5b)=0

We get rid of parentheses

20b-19.5b=0

We add all the numbers together, and all the variables

0.5b=0

b=0/0.5

b=0

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