20+b+-(2b)=12

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Solution for 20+b+-(2b)=12 equation: 



20+b+-(2b)=12

We move all terms to the left:

20+b+-(2b)-(12)=0

determiningTheFunctionDomain
b-2b+20-12+=0

We add all the numbers together, and all the variables

-b=0

b=0/-1

b=0

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