(4 又2/7+2又2/11)÷(1又3/7+8/11)等于多少,简算、、、、求大神帮助
问题描述:
(4 又2/7+2又2/11)÷(1又3/7+8/11)等于多少,简算、、、、求大神帮助
答
(30/7 + 24/11) / (10/7 + 8/11) = (330/77 + 168/77) / (110/77 + 56/77) = (498/77) / (166/77) = 498/166 = 3