知识问答
最佳答案:3/4*1/9+1/4*1/9 2.5/8*2/7+5/8*5/7 3.101*1/5-1/5*21 4.31*5*6-5/6 5.8*4/5+8*11/5 6
最佳答案:一个选择:1,下面的公式(1)-X 2 2 = 0(2)2×2 3×= 0(3)3×2 = 0(3)3×2 = 0(4)×2 + =(5 )= 5×(6)2×2
最佳答案:1/(x-10)+1/(x-6)=1/(x-7)+1/(x-9)1/(x-10)-1/(x-9)=1/(x-7)-1/(x-6)[(x-9)-(x-10)]/(