3.4b+7=3.9b-7

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Solution for 3.4b+7=3.9b-7 equation: 



3.4b+7=3.9b-7

We move all terms to the left:

3.4b+7-(3.9b-7)=0

We get rid of parentheses

3.4b-3.9b+7+7=0

We add all the numbers together, and all the variables

-0.5b+14=0

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

-0.5b=-14

b=-14/-0.5

b=+28

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