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50=-1/3b+20
We move all terms to the left:
50-(-1/3b+20)=0
Domain of the equation: 3b+20)!=0We get rid of parentheses
b∈R
1/3b-20+50=0
We multiply all the terms by the denominator
-20*3b+50*3b+1=0
Wy multiply elements
-60b+150b+1=0
We add all the numbers together, and all the variables
90b+1=0
We move all terms containing b to the left, all other terms to the right
90b=-1
b=-1/90
b=-1/90
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