2a-b-[2a-b-{a-c-(a+b)}]
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Answer:
-(c+b)
Step-by-step explanation:
2a-b-[2a-b-{a-c-(a+b)}]
2a-b-[2a-b-{-c-b}]
2a-b-[2a-b+c+b]
2a-b-2a+b-c-b
-(c+b)
Hope it helps
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