[4-(0.5+2)]×0.75
解方程:3/4x+0.5×0.75=1 1.5×1/2+0.5x=15/4
【0.5+(2-0.75)】*1.6 要简便运算
化简:7:28 2/1:4/1 0.75:0.5 5/9:20/3 ?急
〔0.5+(2-0.75)〕×1.6 10.73-4.76-5.24 17.4×2.43-1.43×7.4 2.2+(4
5又4分之3-7又2分之1-0.75+0.5
计算:(2-62/27)^1/3+根号下(-11/3)²-3/16^-0.75+0.5(4^-0.5)^-2.
4:0.5= 1/6:1/9= 8.1:0.9= 15:0.5= 0.75:1.5= 8/15:4/5= 5/14:2/
简算 (0.4+2/3)/(5/6-0.75)*0.5
7.5*3/4+0.75*1/2-0.75简便算
简算(8/15+9/20*2/3)÷1/12 (0.4+2/3)/(5/6-0.75)*0.5 方程 1/4x+3/4x
0.4x+0.9/0.5-0.3x+0.1/.2-0.75-0.5x/0.75=0怎么解,求你了
填图,把1/4,0.5,0.75,1,1又1/4,1.5,1.75,2这八个数分别填入左图中的八个圆圈内.