来源：学生作业帮 编辑：灵鹊做题网作业帮 分类：数学作业 时间：2024/04/26 16:55:11
简便计算,和解方程
4X÷3/5=4/15
4X=4/25
X=1/25
3/4×[(7/15-1/15)÷2/3]
=3/4×[2/5×3/2]
=3/4×2/5×3/2
=3/10×3/2
=9/20
3/4X-1/5X=11/12
11/20X=11/12
X=5/3
6/5-5/6×6/5
=6/5×(1-5/6)
=6/5×1/6
=1/5
(1/4-1/20)×40
=1/4×40-1/20×40
=10-2
=8
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