Question

i) 15 –{8 +27 - (2 x 8 – 7)}​

Answer 1

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15-{8 + 27 -(2×8-7)}

➡️15 - { 8+27- (16 - 7)}

➡️15 - { 8 + 27 - 9}

➡️ 15 - { 35 - 9}

➡️ 15 - 26

➡️ -11

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Answer 2

Answer:

15-{8+27-(2×8-7)}

= 15- {8 +27- ( 16-7)}

= 15- { 8 +27 - 9}

= 15- { 35-9}

= 15- { 26}

= 15- 26

= -11.