5/3+5/2=5/3×5/2 9/4+9/5=9/4×9/5 11/4+11/7=11/4×11/7 找规律急用!

2/5+3/5×4/9÷4/5=? 从+,-,×,÷,【】中选去适当的符号添在等号左边,使等式成立5 5 5 5 5 =1 5 5 5 5 5 =3 9 9 9 9 9 =3 5 5 5 5 5 =2 5 5 5 5 5 =4 9 9 9 9 9 =20应该是9 9 9 9 9 =17 5x/6-3/4(6x+5)+1=2/3(9x-5)+5 (7/4-5/16)乘(5/9+2/3)= 5 5 5 5=2 填符号5 5 5 5=3 5 5 5 5=4 5 5 5 5=1 1=5,2=7,3=9,4=11 5=?5=? 8÷(-2)²-(-9/5)÷(3/5)²=?8÷(-2)²-(-9/5)÷(3/5)²=2/3 + 3/5 ÷ （-2/5) - 3/4 × （-4/5)=?8÷(-2)²-(-9/5)÷(3/5)²= 2/3 + 3/5 ÷ （-2/5) - 3/4 × （-4/5)=?不小心连一块了。 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=? 9×3×5×2 3加36除3减2乘4=186加36除3减2乘4减1=5加括号4 4 4 4=2 加运算符号1 2 3 4 5 6 7 8 9=90 5 5 5 5 5 =15 5 5 5 5 =25 5 5 5 5 =35 5 5 5 5 =41 2 3 4 5 6 7 8 9=36 =10 1/9+1/5+3/5+4/9+2/3+7/8+1/6+5/7+3/7+5/8+3/5+1/8+2/9=? (-3/5)×（-12）+0.27×5/9+（-12）×（-2/5）+4/9×0.27=? -|-2/3-(+2/3)|-|(-1/5)+(-2/5)| |4/7-2/5|-|3/5-7/9|+|2/9-3/7| (-1/2)*(2/3)*(-3/4)*(4/5)*(-5/6).(-9/10)= = 2/9+3/4=5/9x 解方程 x-9/4=9/5+3/2怎么解 8-4/9-5/9X=2/3 x-4/9-5/9x=2/3