720-20×6+58=

720-20×6+58= 公务员 行测 甲、乙两港相距720km,轮船往返2地需要35h,逆流比顺流多花5h.帆船在静水中每小时航行24km,问帆船往返2地花多少时间?A 58 B 60 C 64 D 66答：T逆=20h T顺=15hV水=(720/15-720/20)/2=6T帆船=720/30+72 +44=58+20 6x-20%x=58的方程怎样算? 720/12+24*20=1680 210-60/5*6=5 720/12+24*20=1 给算式填括号,使等式成立 (720除以?+24)*20=600 (10-x)(200+20x)=720 6千克720克=()千克 6X+6 =58 3Q6x+6=58 的解是多少 简单的百分数计算:::::::::41/53 =12/53 =15/72 =20/72 =10/72 =27/72 =44/56 =6/56 =37/52 =14/52 =1/52 =42/58 =11/58 =5/58 =10/57 =4/57 =43/57 =13/52 =21/52 =18/52 =40/52 =8/52 =4/52 =8/58 =6/58 =44/58 =4/50 =28/50 =18/50 = 12分之+58分之7—20分之9= 16*(58+x)=1748-20解方程 数学题丫丫丫丫丫56+x-(x2-20)=58 X等于? 6升58毫升=（）升=（）毫升 720-(58+36*12)小学四年级简便算法 解方程720/(x＋6)－180/x＝20详细点分解因式 x+y=20 5x-2y=58x+y=205x-2y=58 360/720=