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Find the sum: (–7) + (–9) + 4 + 16 ??????????????????

Find the sum: 
(–7) + (–9) + 4 + 16 ??????????????????

Grade:12

1 Answers

Harshit Singh
askIITians Faculty 5963 Points
one year ago
Dear Student

(-7) + (-9) + 4 + 16
= (-7) + (-9) + 4 + (+7) + (+9)
= (-7) + (+7) + (-9) + (+9) + 4
= 0 + 0 + 4 [(-a) + (+a) = 0]
=4

Thanks

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