Question

70 - 10 - (5 + {20 - (50 - 56 - 16)}]
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Answer 1

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$⇒70 - 10 - (5 + (20 - (50 - 56 - 16))) \\ ⇒70 - 10 - (5 +( 20 - 50 + 56 + 16)) \\⇒ 70 - 10 - (5 + 42) \\ ⇒70 - 10 - 47 \\ ⇒13$

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