Tính nhanh: 2/3.5 +3/5.8 +11/8.19 +13/19.32 +25/32.57 +30/57.87
Giải thích
23.5+35.8+118.19+1319.32+2532.57+3057.87=13−15+15−18+18−119+119−132+132−157+157−187=13−187=2987−187=2887
23.5+35.8+118.19+1319.32+2532.57+3057.87=13−15+15−18+18−119+119−132+132−157+157−187=13−187=2987−187=2887