3b-13+4b=7

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Solution for 3b-13+4b=7 equation: 



3b-13+4b=7

We move all terms to the left:

3b-13+4b-(7)=0

We add all the numbers together, and all the variables

7b-20=0

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

7b=20

b=20/7

b=2+6/7

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