39. Simplify the following
a) (25 - 10) x [5 + {2 + 6 - 1}]
b) 242 - [34 - 6(5-3)]
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Answer:
a). (25-10)×[5+(2+6-1)]
=15×[5+7]
= 15×12
=.180
b). 242-[34-6(5-3)]
=242-[34-6×2]
=242-[34-12]
=242-22
=220
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