Question

Simplify : -a -[-b-{-c-(-a-b-c)}]
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Answer 1

Answer:

Step-by-step explanation:

-a -[-b-{-c-(-a-b-c)}]

-a -[-b-{-c+a+b+c}]

-a -[-b-{a+b}]

-a -[-b-a-b]

-a -[-2b-a]

-a + 2b + a

2b

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