3+9b=75

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Solution for 3+9b=75 equation: 



3+9b=75

We move all terms to the left:

3+9b-(75)=0

We add all the numbers together, and all the variables

9b-72=0

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

9b=72

b=72/9

b=8

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