Answer:
answer is down below
Explanation:
u have ur two brackets.
(9b+3)(b-7)=0
take 1 bracket at a time
9b+3=0
solve it so:
9b=-3
b= -3 / 9
Ans: b=-1/3
take the other bracket
b-7=0
solve it:
Ans: b=+7
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