456
Giới thiệu về bản thân
`安静`.....
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4
2024-04-16 20:29:12
(mik bt thế)
4
2024-04-16 20:28:51
3xy + x - 15y - 10 = 0
Suy ra ta có 2 TH
\(\Leftrightarrow3xy+x=0\) (TH1)
\(\Leftrightarrow15y-10=0\) (TH2)
2024-04-16 20:27:11
45% x - 0,385 = -1,685
45% x = -1,685 + 0,385
45% x = -1,3
0,45 x = -1,3
x = -1,3 : 0,45
x = -2,8888
2024-04-16 20:24:58
8/16 : 27
= 1/2 : 27
= 1/2 x 1/27
= 1/54
2024-04-16 20:24:32
a ) 9/7 x 5/12 + 9/7 x 11/12
= 9/7 x (5/12 + 11/12)
= 9/7 x 4/3
= 2/7 x 4
= 8/7
b) 7/4 x 25/13 - 5/13 x 7/4
= 7/4 x (25/13 - 5/13)
= 7/4 x 20/13
= 7 x 5/13
= 35/13
2024-04-16 20:22:18
hứa nhé bn
2024-04-16 20:21:37
chả hỉu lắm đề lỗi ko bn?
2024-04-16 20:17:36
2 x \(x\) + 6 x \(x\) = 48
\(x\) x ( 2 + 6 ) = 48
\(x\) x 8 = 48
\(x\) = 48 : 8
\(x\) = 6
2024-04-16 20:13:29
4
2024-04-16 20:11:24
6,25 giờ = 6 giờ 15 phút