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12b - [9 – 7(5b – 6)]
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12b - [9 – 7(5b – 6)]

User Deepak Kothari
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8.2k points

1 Answer

3 votes

we have the following:


\begin{gathered} 12b-\mleft[9-7\mleft(5b-6\mright)\mright] \\ 12b-(9-35b+42) \\ 12b-9+35b-42 \\ 47b-51 \end{gathered}

the answer is 47b - 51

User Tsuyoshi Endo
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