Wednesday, 28 February 2018

EVALUATE 1


Evaluate  90 + 6 – 5 – 7 – 9 + 15.

Solution

= 90 + 6 – 5 – 7 – 9 + 15

= 90 + 6 + 15 – 5 – 7 – 9

= 90 + 6 + 15 – ( 5 + 7 + 9)

= 111 – 21

= 90

TRY THIS………



Evaluate  75 + 11 – 17 – 9 – 13 + 15

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