(-2/5)+(-5/6)-(-4.9)-0.6=? (1-2)(3-4)(4-5)(5-6)...(103-104)怎么做最好能有过程谢谢
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(-2/5)+(-5/6)-(-4.9)-0.6=? (1-2)(3-4)(4-5)(5-6)...(103-104)怎么做最好能有过程谢谢
(-2/5)+(-5/6)-(-4.9)-0.6=? (1-2)(3-4)(4-5)(5-6)...(103-104)怎么做
最好能有过程
谢谢
(-2/5)+(-5/6)-(-4.9)-0.6=? (1-2)(3-4)(4-5)(5-6)...(103-104)怎么做最好能有过程谢谢
(-2/5)+(-5/6)-(-4.9)-0.6
=-2/5-5/6+4.9-0.6
=-37/36+4.3
=4+3/10-37/36
=3又180分之49
(1-2)(3-4)(4-5)(5-6)...(103-104)
=(-1)(-1)(-1)...(-1)
有52个,52是偶数
所以=1
(-2/5)+(-5/6)-(-4.9)-0.
有理数及其运算:(-5/2)+(-5/6)-(-4.9)-0.6
简便计算:(4.8+4.9*2+5)*25
8右6分之5+2.75+2右6分之1+7右4分之1=?4.9×5右2分之1+4.9+3右2分之1×4.9
(5分之1-6分之1)*(7分之2-1)的二次方*4.9
(-2/5)+(-5/6)-(-4.9)-0.6=? (1-2)(3-4)(4-5)(5-6)...(103-104)怎么做最好能有过程谢谢
3分之2x-5分之1=4.9
4.9-5x=2.4
(1)100分之49、 2分之1 、0.493、49.2%、4.9 (2) 3分之1、5%、6分之1、0.25、5分之1从小到大排列
解比例.6分之5:4分之3=x:5分之2和x分之180=15:7还有4.9分之2.1=19.6分之x
(0.55-1/5)/(5/7*4.9)
5.1/5+4.9*20% 8分之1*6分之1+87.5%/6
求解几道计算题 -4.2+5.7-8.4+10 6.1-3.7-4.9+1.8 1/3-2/3+1 (-1/4)+5/6+2/3-2/1
3/40:7/20 1.8:5/6 3/2:0.3 化简比:270:15/2 4.9:350 0.75:8/3 13/2:26/3
3/40:7/20 1.8:5/6 3/2:0.3 化简比:270:15/2 4.9:350 0.75:8/3 13/2:26/3
试着做下列解方程99-x=64 5x÷6=1.7 13x0.8-2x=4.9 2.5(2+ x)=10
12.5*9.8-4.9*5怎么简便
5x=0.31+4.9x