3b+9=9+15

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Solution for 3b+9=9+15 equation: 



3b+9=9+15

We move all terms to the left:

3b+9-(9+15)=0

We add all the numbers together, and all the variables

3b+9-24=0

We add all the numbers together, and all the variables

3b-15=0

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

3b=15

b=15/3

b=5

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