If Xiao Li gives me 100 stamps, I will have twice as many stamps as Xiao Li Xiao Hong said to her friend Xiao Li, "if you give me 100 stamps, my stamps will be twice as big as yours." Xiao Li said, "if you only give me 10 stamps, my stamps will be six times as big as yours." how many stamps do they have?

If Xiao Li gives me 100 stamps, I will have twice as many stamps as Xiao Li Xiao Hong said to her friend Xiao Li, "if you give me 100 stamps, my stamps will be twice as big as yours." Xiao Li said, "if you only give me 10 stamps, my stamps will be six times as big as yours." how many stamps do they have?

Let X Original stamps of Xiaohong and Y original stamps of Xiaoli be set up. The binary linear equation system is set up: x + 100 = 2 (y-100) x + 100 = 2y-200 2y-x = 300 (1) y + 10 = 6 (X-10). The two forms are simplified: y + 10 = 6x-60, that is: 6x-y = 70 (2) (1) + (2) · 2, then x = 40 (1), y = 170