15*(-2/5)-(-1又7/8)*0-(-25)*(-2又1/3)
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![15*(-2/5)-(-1又7/8)*0-(-25)*(-2又1/3)](/uploads/image/z/435467-11-7.jpg?t=15%2A%28-2%2F5%29-%28-1%E5%8F%887%2F8%29%2A0-%28-25%29%2A%28-2%E5%8F%881%2F3%29)
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15*(-2/5)-(-1又7/8)*0-(-25)*(-2又1/3)
15*(-2/5)-(-1又7/8)*0-(-25)*(-2又1/3)
15*(-2/5)-(-1又7/8)*0-(-25)*(-2又1/3)
=-6-0-175/3
=-18/3-175/3
=-64又1/3