Question

simplify 100 - [70 - {50 - ( 30 - 15 - 17)}]​

Answer 1

100-[70-{50-(30-15-17)}]

100-[70-{50-(-2)}]

100-[70-{50+2}]

100-[70-52]

100-18

82

Answer 2

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100 - [70 - {50 - ( 30 - 15 - 17)}]

= 100 - [70 - {50 - ( 30 - 32)}]

= 100 - [70 - {50 - ( - 2)}]

= 100 - [70 - {50 + 2 }]

= 100 - [70 - {52 }]

= 100 - [70 - 52 ]

= 100 - [18]

= 100 - 18

= 82

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