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2023-10-22 20:01:41
2023-10-22 19:58:39
2023-08-24 21:40:23
a) 20,23 x 21 +20,23 x80 +20,23
=20,23 x 21 + 20,23 x 80 + 20,23 x 1
=20,23 x ( 80 + 21 - 1 )
=20,23 x 100
= 2023
b) 5/13 x 7/11 + 5/13 x 2/11 + 8/13 x 9/11
= 5/13 x ( 7/11 + 2/11) + 8/13 x 9/11
= 5/13 x 9/11 + 8/13 x 9/11
= 9/11+ ( 5/13 + 8/13 )
= 9/11+ 1
= 9/11
2023-08-24 21:25:28
bài làm
các số chia hết cho 2 và 3 là 162;126;216;612
2023-08-24 21:21:26
bài làm
Tổng số mét của 2 cuộn vải là
90 + 60 = 150 mét vuông
Số lá cờ may được là
150 : 0,75 = 200 lá cờ
Đáp số 200 lá cờ
2023-08-24 21:03:01