7+4b,b=3

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Solution for 7+4b,b=3 equation: 



7+4b.b=3

We move all terms to the left:

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

We add all the numbers together, and all the variables

4b.b+4=0

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

4b.b=-4

b=-4/1

b=-4

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