Question

(iv) [20 - 2 {5 +(- 12)}x {2 (5 - 2-9)
(v) 29 - [4 - {7 - (6 - 5-4)}]​

Answer 1

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1. [20 - 2 { 5 + ( -12)} × {2 ( 5 - 2 - 9).

➜ [ 20 - 2 - 7 ] × { 2 - 6 }

➜ 11 × ( - 4)

➜ - 44

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2. 29 - [4 - { 7 - ( 6 - 5 - 4 )}]

➜ 29 - [ 4 - { 7 - ( - 3 )}]

➜ 29 - [ 4 - { 7 + 3 }]

➜ 29 - [ 4 - 10 ]

➜ 29 - [ - 6 ]

➜ 29 + 6

➜ 35

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