简便运算:4×(-15)×(-7/8+1又3/4 - 7/12)

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简便运算:4×(-15)×(-7/8+1又3/4-7/12)简便运算:4×(-15)×(-7/8+1又3/4-7/12)简便运算:4×(-15)×(-7/8+1又3/4-7/12)原式=-15*4*(

简便运算:4×(-15)×(-7/8+1又3/4 - 7/12)
简便运算:4×(-15)×(-7/8+1又3/4 - 7/12)

简便运算:4×(-15)×(-7/8+1又3/4 - 7/12)
原式=-15*4*(-7/8+7/4-7/12)
=-15*4*(-7/4)*(1/2-1+1/3)
=15*7*(-1/6)
=-35/2