3=15+3b

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Solution for 3=15+3b equation:



3=15+3b
We move all terms to the left:
3-(15+3b)=0
We add all the numbers together, and all the variables
-(3b+15)+3=0
We get rid of parentheses
-3b-15+3=0
We add all the numbers together, and all the variables
-3b-12=0
We move all terms containing b to the left, all other terms to the right
-3b=12
b=12/-3
b=-4

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