3b-21=3

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Solution for 3b-21=3 equation:



3b-21=3
We move all terms to the left:
3b-21-(3)=0
We add all the numbers together, and all the variables
3b-24=0
We move all terms containing b to the left, all other terms to the right
3b=24
b=24/3
b=8

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