(-3/8+7/12)÷(-1/24)+(-7/16)÷(-1/3/4+7/8)

问题描述:

(-3/8+7/12)÷(-1/24)+(-7/16)÷(-1/3/4+7/8)

(-3/8+7/12)÷(-1/24)+(-7/16)÷(-1/3/4+7/8)
=(-3/8+7/12)*(-24)+[48*(-7/16)]÷[48*(-4/3+7/8)]
=9-16+(-21)÷(-64+42)
=-7+21/22
=-6又1/22