7-4b-4=15

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Solution for 7-4b-4=15 equation: 



7-4b-4=15

We move all terms to the left:

7-4b-4-(15)=0

We add all the numbers together, and all the variables

-4b-12=0

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

-4b=12

b=12/-4

b=-3

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