The simplification of 2.002+7.9{2.8−6.3(3.6−1.5)+15.6} yields
A
2.002
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B
4.2845
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C
40.843
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D
42.845
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Solution
The correct option is D 42.845 2.002+7.9{2.8−6.3(3.6−1.5)+15.6} =2.002+7.9{2.8−6.3×2.1+15.6} =2.002+7.9{2.8−13.23+15.6} =2.002+7.9{5.17} =2.002+40.843=42.845