12b+9=7b+24

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Solution for 12b+9=7b+24 equation: 



12b+9=7b+24

We move all terms to the left:

12b+9-(7b+24)=0

We get rid of parentheses

12b-7b-24+9=0

We add all the numbers together, and all the variables

5b-15=0

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

5b=15

b=15/5

b=3

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