11. Simplify the following.
a. 4x - [3x - (1 - 5x) - 6{8 - 3(2x + 7)}]
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Answer:
4x-[3x-(1-5x)-6{8-6x-21}]
=4x-[3x-(1-5x)-6{-6x-13}]
=4x-[3x-1+5x+36x+78]
=4x-[44x+77]
=4x-44x-77
=-40x -77 Ans
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