7b+14=3b+42

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Solution for 7b+14=3b+42 equation: 



7b+14=3b+42

We move all terms to the left:

7b+14-(3b+42)=0

We get rid of parentheses

7b-3b-42+14=0

We add all the numbers together, and all the variables

4b-28=0

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

4b=28

b=28/4

b=7

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