3a–{5b–2[b–(1–2b)]}

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1 Answer

3a-{5b-2[b-(1-2b)]}=

3a-{5b-2[b-1+2b]}=3a-{5b-2[3b-1]}=

3a-{5b-6b+2}=3a-{2-b}=

3a+b-2.
by Top Rated User (1.1m points)

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