7b-2b-1=19

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Solution for 7b-2b-1=19 equation: 



7b-2b-1=19

We move all terms to the left:

7b-2b-1-(19)=0

We add all the numbers together, and all the variables

5b-20=0

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

5b=20

b=20/5

b=4

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