ab x 5 = 1ab
50a + 5b = 100 + 10a + b
40a + 4b = 100
4 ( 10a + b ) = 100
ab = 25
ab x 5 = 1ab
ab x 5 = 100 + ab
ab x 5 - ab = 100
ab x 5 - ab x 1 = 100
ab x (5-1) = 100
ab x 4 = 100
ab = 100 : 4
ab = 25
ab x 5 = 1ab
=> 50a + 5b = 100 + 10a + b
=> 40a + 4b = 100
=> 4(10a + b) = 100
=> ab = 25
ab x 5 =1ab
=>ab x 5 =100 +ab
=>ab x 4 =100
=> ab =25
ab x 5 = 1ab
=> 50a + 5b = 100 + 10a + b
=> 40a + 4b = 100
=> 4(10a + b) = 100
=> ab = 25
ab x 5 = 1ab
ab x 5 = 100 + 10a + b
50a + 5b = 100 + 10a + b
40a + 4b = 100
4 ( 10 a + b ) = 100
ab = 25.
ab x 5 = 1ab
ab x 5 = 100 + 10a + b
50a + 5b = 100 + 10a + b
40a + 4b = 100
4 ( 10 a + b ) = 100
ab = 25.
TSP từ=25. 25x5=125 nhớ k cho mik HT
