原式=(0.5+1/3)÷0.6-17/18 =0.5÷0.6+1/3÷0.6-17/18 =5/6+1/3×5/3-17/18 =5/6+5/9-17/18 =15/18+10/18-17/18 =8/18 =4/9
请问0.5 和1/3之间的符号是什么?
(0.5+1/3)÷0.6-17/18=(1/2+1/3)×5/3-17/18=5/6×5/3-17/18=25/18-17/18=4/9