Gọi số cần tìm là ab ( a khác 0 ; a , b < 10 ) . Ta có :
ab . 9 = 2ab
ab . 9 = 200 + ab
ab .9 - ab = 200
ab . 8 = 200
ab = 200 : 8
ab= 25
Vậy số cần tìm laˋ 25
Va
ta gọi số cần tìm là ab,khi viết thêm chữ số hai vào bên trái ta được số 2ab
ta có :2ab=abx9
200+ab=ab+abx8[cung bot ab]
200=abx8
ab=200:8
ab=25
25 là đúng 10000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000%
minh noi that day
Các bạn trả lời hoàn toàn chính xác 👍👍👍
tất cả các bạn làm đúng hết rồi đó ^-^
25
dung 1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000%
Mình đang thắc mắc là đây là toán lớp 3 sao mn lại ik giải như toán lớp 8với lớp 9😅
