(-49又15/16)乘-8

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(-49又15/16)乘-8(-49又15/16)乘-8(-49又15/16)乘-8(-49又15/16)乘-8=(-50+1/16)×(-8)=400-1/2=399.5

(-49又15/16)乘-8
(-49又15/16)乘-8

(-49又15/16)乘-8
(-49又15/16)乘-8
=(-50+1/16)×(-8)
=400-1/2
=399.5