1,少符号2,=4-[(2/6+5/6)×3/7]=4-[7/6×3/7]=4-1/2=3.53,=72/5=14.44,=(9+9×14-18)/13=9×13/13=95, 77/100,循环小数的话是7/96, 3×5×7=105,105×5=525,525-3=5227,(180+240)÷7/9=5408, 3/89, 7/12=1/3+1/6+1...
1,少符号2,=4-[(2/6+5/6)×3/7]=4-[7/6×3/7]=4-1/2=3.53,=72/5=14.44,=(9+9×14-18)/13=9×13/13=95, 77/100,循环小数的话是7/96, 3×5×7=105,105×5=525,525-3=5227,(180+240)÷7/9=5408, 3/89, 7/12=1/3+1/6+1...