2b+5b=4

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Solution for 2b+5b=4 equation: 



2b+5b=4

We move all terms to the left:

2b+5b-(4)=0

We add all the numbers together, and all the variables

7b-4=0

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

7b=4

b=4/7

b=4/7

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