-72*(1/4-5/9+7/12)/(-2)
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-72*(1/4-5/9+7/12)/(-2)-72*(1/4-5/9+7/12)/(-2)-72*(1/4-5/9+7/12)/(-2)-72*(1/4-5/9+7/12)/(-2)=(-18+40
-72*(1/4-5/9+7/12)/(-2)
-72*(1/4-5/9+7/12)/(-2)
-72*(1/4-5/9+7/12)/(-2)
-72*(1/4-5/9+7/12)/(-2)
=(-18+40-42)/(-2)
=-20/(-2)
=10
-72*(1/4-5/9+7/12)/(-2)
-72×(1/4-5/9+12/7)÷(-2)
(-72)x{1|4-5|9+7|12}除以(-2)
-72*(1/4-5/9+7/12)/(-2)
-72*(1/4-5/9+7/12)/(-2)
-72×(1/4-5/9+12/7)÷(-2)要过程
计算下面各题能简算的要简算 5/6-1/2+1/4 5/12+3/4-5/8 4/5-(3/10+1/6) 5/9+7/18+4/9 1-2/7-5/72/3+5/13+1/3
递等式计算6.4×5/2+5/2×(1-40%)72÷9/8-35×5/4 12/5+(6/5-12/1)÷16/9 20-(11.9-8.4×7/1) ( / 代表几分之几)
(4分之1-6分之5+9分之7-18分之1)×(-72)=
能简算的要简算3/8除以1/10×4/5 5/9×3/5×9/2 12除以(3/4除以1/5)98×5/9734又71/72×72 5/6×17+1/6×17 3/4×5/2+3/4×3/2 5/7除以3-2/21 5/9×6×1/5
(9分之7+6分之5-4分之1)×72=
(9/7+6/5-4/1)×72 怎样简便
(7/9+5/6-1/4)×72=?
(5/12+1/9+3/8)乘72等于
(12/5+9/1+8/3)乘72
12×3/8÷3/4 (1/4+2/9)×72 7/15+8/15×15 3-2/3÷4/5-1/6 (1/3+1/2)÷(1-3/8)
一些数学计算题1、求比值1/3:72 0.5:1.6 2/9:2/32、化简比38cm:57m 0.25:3/5 0.15/4计算0.75*3/4+3/4*2+7.25/4/3 7/7/9-7/9/7 7/12*3/7/0.251/0.1/0.01/1/1000 6.12*9.9+0.612 5/4-(5/8-0.3)*1/2(4/3-5/4)*(3*6/5) 【(0.8-4/15)/40
34/35-(4/15+2/5) 2-3/8÷7/16-1/7 (5/12+1/9-3/8)×72简便计算