来源：学生作业帮 编辑：作业帮 分类：数学作业 时间：2024/05/27 20:19:22
计算(25/88-5/108+5/144)*(9/25-9/5)怎么做?
(25/88-5/108+5/144)*(9/25-9/5)
=5/4×(5/22-1/27+1/36)×9/5×(1/5-1)
=9/4×(5/22-1/27+1/36)×(-4/5)
=-9/5×(5/22-1/27+1/36)
=-1/5×(45/22-1/3+1/4)
=-1/5×(45/22-1/12)
=-1/10×(45/11-1/6)
=-1/10×(270-11)/66
=-259/660
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