0.75*4.21-0.21*0.75-0.75的简便计算
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0.75*4.21-0.21*0.75-0.75的简便计算0.75*4.21-0.21*0.75-0.75的简便计算0.75*4.21-0.21*0.75-0.75的简便计算=0.75*（4.21-0
0.75*4.21-0.21*0.75-0.75的简便计算
0.75*4.21-0.21*0.75-0.75的简便计算
0.75*4.21-0.21*0.75-0.75的简便计算
=0.75*（4.21-0.21）-0.75
=0.75*4-0.75
=3-0.75
=2.25
=0.75*(4.21-0.21-1)
=0.75*3
=2.25
=0.75*4.21-0.21*0.75-0.75
=0.75*(4.21-0.21-1)
=0.75*(4+0.21-0.21-1)
=0.75*(4-1)
=0.75*3
=3/4*3
=9/4
0.75*4.21-0.21*0.75-0.75
=0.25*3*（4.21-0.21）-0.75
=0.25*4*3-0.75
=1*3-0.75
=3-0.75
=2.25
0.75*4.21-0.21*0.75-0.75的简便计算
0.75:
三分之五比0.21 1.35比0.75 化简,比值
三分之一：五分之四,五分之三：0.21,1.35:0.75,化简比
-0.75 倒数
0.75：1.
0.75×5.7+0.75等于多少
数学题:|-1.75(-0.75)|-(|-1.25|-|-0.75|)
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