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12=-4/3b
We move all terms to the left:
12-(-4/3b)=0
Domain of the equation: 3b)!=0We get rid of parentheses
b!=0/1
b!=0
b∈R
4/3b+12=0
We multiply all the terms by the denominator
12*3b+4=0
Wy multiply elements
36b+4=0
We move all terms containing b to the left, all other terms to the right
36b=-4
b=-4/36
b=-1/9
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