(-3又1/8)*(0.125)—0.125*(-4又7/8)

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(-3又1/8)*(0.125)—0.125*(-4又7/8)(-3又1/8)*(0.125)—0.125*(-4又7/8)(-3又1/8)*(0.125)—0.125*(-4又7/8)=0.125*

(-3又1/8)*(0.125)—0.125*(-4又7/8)
(-3又1/8)*(0.125)—0.125*(-4又7/8)

(-3又1/8)*(0.125)—0.125*(-4又7/8)
=0.125*(-3 1/8 + 4 7/8)
=1/8 * 7/4
=7/32

7/32

=0.125*(-3又1/8+4又7/8)=0.125*(14/8)=7/32