4b+2b=-21

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Solution for 4b+2b=-21 equation:



4b+2b=-21
We move all terms to the left:
4b+2b-(-21)=0
We add all the numbers together, and all the variables
6b+21=0
We move all terms containing b to the left, all other terms to the right
6b=-21
b=-21/6
b=-3+1/2

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