1：5^1/2-3-(9-4*5^1/2)^1/2 2：[(8ab^1/3-b^4/3)/(4a^2/3+2a^2/3b^2/3+b^2/3)]/(2a^2/3-b^2/3)

/1/3-1/2/+/1/4-1/3/+/1/5-1/4/+.+/1/10-1/9/ |1/3-1/2|+|1/4-1/3|+|1/5-1/4|+...+|1/10-1/9| 5/9+（3/4-1/2） 1+2+3+5+4+6+9 5+1+2+1+3+9+8+4+5 1/1*2*3+1/2*3*4+1/3*4*5+.+1/8*9*10 1+1+2+2+3+4+5+6+78+9 |2 -5 1 2| |-3 7 -1 4| |5 -9 2 7| |4 -6 1 1+1+2+2+3+3+4+4+5+5+6+67+78+8+9+9 1+2+3+4+5-1-2-3-5-+1+2+9=? （1+1/2)*(1+1/4)*.*(1+1/10)*(1-1/3)*(1-1/5)*.(1-1/9)简算 5/9÷1/3-2/9÷1/3 (1/4+5/6)X24/25 -|-2/3-(+2/3)|-|(-1/5)+(-2/5)| |4/7-2/5|-|3/5-7/9|+|2/9-3/7| 脱式计算 2/3+5/9-2/3+5/9 3/9-(1/4-1/9)-3/4 5/6+27+5/9+1/6+1/7+3/7+5/9+4/7+2/5+4/9+4/5+1/5+2/9=? 2:5/4 9/25:3/5 2/3:5/6 1/5:1/20 5/9:1 2:3/8 3/4:4/3化简比 化简:1/1*2+1/2*3+1/3*4+1/4*5+1/5*6+1/6*7+1/7*8+1/8*9+1/9*10 2-3/1等于多少 3-9/5 2/1+0.5 7又9/4-5