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Question
The value of −8−2[6+4{7−(2.8+1.4)}] is equal to
The value of −8−2[6+4{7−(2.8+1.4)}] is equal to
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Solution
The correct option is B −42.4
−8−2[6+4{7−(4.2)}]
=−8−2[6+4{7−4.2}]
=−8−2[6+4{2.8}]
=−8−2[6+11.2]=−8−2[17.2]
=−8−34.4=−42.4
−8−2[6+4{7−(4.2)}]
=−8−2[6+4{7−4.2}]
=−8−2[6+4{2.8}]
=−8−2[6+11.2]=−8−2[17.2]
=−8−34.4=−42.4
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