7b+9b=4

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Solution for 7b+9b=4 equation: 



7b+9b=4

We move all terms to the left:

7b+9b-(4)=0

We add all the numbers together, and all the variables

16b-4=0

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

16b=4

b=4/16

b=1/4

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