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2022-08-20 19:08:57
2022-08-17 21:23:46
chiều rộng là
18 . 2/3 = 12 [ m ]
diện tích là
18.12 = 216 [m vuông ]
Đ/S :216 m vuông
2022-08-13 20:22:08
2022-08-11 19:41:46
115- 5 .[x-1 ] = 10
5.[x-1] =115-10
5.[x-1] =105
x-1 =105:5
x-1 =21
x =21-1
x =20
2022-08-10 22:23:07
2xX+8=210:7
2xX+8=30
2xX =30-8
2xX =22
X =22:2
X =11
2022-08-10 09:35:57
2022-08-10 09:35:57
2022-08-10 09:35:57
2022-08-10 09:35:57
2022-08-10 09:35:57