[88-15÷(1.375-3/4)]÷1又3/5+2又1/3

问题描述:

[88-15÷(1.375-3/4)]÷1又3/5+2又1/3

=[88-15÷(1.375-0.75)]÷1.6+2.33.
=[88-15÷0.625]÷1.6+2.33.
=[88-24]÷1.6+2.33.
=64÷1.6+2.33.
=40+2.333333.
=42.3333333.(无限循环3)
希望我小学的内容没忘记.