3=15-6b

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Solution for 3=15-6b equation: 



3=15-6b

We move all terms to the left:

3-(15-6b)=0

We add all the numbers together, and all the variables

-(-6b+15)+3=0

We get rid of parentheses

6b-15+3=0

We add all the numbers together, and all the variables

6b-12=0

We move all terms containing b to the left, all other terms to the right

6b=12

b=12/6

b=2

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