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Giới thiệu về bản thân
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2024-10-29 19:21:33
2024-10-29 19:21:06
2024-10-29 19:21:04
2024-10-29 19:20:59
2024-10-29 19:19:39
2024-10-15 16:13:53
a)
1
5
+
4
5
:
x
=
0
,
75
5
1
+
5
4
:x=0,75
1
5
+
4
5
:
x
=
3
4
5
1
+
5
4
:x=
4
3
4
5
:
x
=
3
4
−
1
5
5
4
:x=
4
3
−
5
1
4
5
:
x
=
11
20
5
4
:x=
20
11
x
=
16
11
x=
11
16
;
2024-09-02 10:30:27
2024-09-02 10:29:43
2024-09-02 10:26:46
a) 2/3.5/4 - 3/4.2/3
=5/6 - 1/2
=5/6 - 3/6
=2/6 = 1/3
b) 2.(-3/2)^2 - 7/2
= 2.9/4 - 7/2
= 9/2-7/2
=1
c) -3/4.5 3/13 - 0,75.36/3
=-3/4.68/13 + (-0,75).36/13
=(-0.75).68/13 + (-0,75).36/13
=(-0.75).(68/13 + 36/13)
=(-0.75).8
= -6
2024-09-02 10:26:46
a) 2/3.5/4 - 3/4.2/3
=5/6 - 1/2
=5/6 - 3/6
=2/6 = 1/3
b) 2.(-3/2)^2 - 7/2
= 2.9/4 - 7/2
= 9/2-7/2
=1
c) -3/4.5 3/13 - 0,75.36/3
=-3/4.68/13 + (-0,75).36/13
=(-0.75).68/13 + (-0,75).36/13
=(-0.75).(68/13 + 36/13)
=(-0.75).8
= -6