4b+20+18=2b+21

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Solution for 4b+20+18=2b+21 equation:



4b+20+18=2b+21
We move all terms to the left:
4b+20+18-(2b+21)=0
We add all the numbers together, and all the variables
4b-(2b+21)+38=0
We get rid of parentheses
4b-2b-21+38=0
We add all the numbers together, and all the variables
2b+17=0
We move all terms containing b to the left, all other terms to the right
2b=-17
b=-17/2
b=-8+1/2

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