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1
1
4,1
2
3
4
+ =
+ =
+
+ =
= + = +
<
< >
<
>
>
<
>>>>>>>>
>
< <
< <
> >
< < < <
=
=100
1
4=
100=
3
4=
100=
1
2
1
4
3
4
100 100
1
2=
50
100=
5
10
1
2
1
23
6
4
8
6
121
2
1
4
3
4
•
•
•
•
•
•
•
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=
=
< > =
< > =
=
× =
× =
•
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•
•
+ =
•
•
•
•
× =
× =
× =
=− =
1
2=
− =
•
•
•
= =
= =
= =
× =
× =
=
× ==
× =
• >
•1
2=
• <
1
2
•
•
•
•
1
4
•
•
•
•
•
•
𝑥 𝑦
𝑥 𝑦
•
•
•
•
+ =
a b
c
d
e
•
•
•
•
•
°
𝑥𝑦
𝑥
𝑦
𝑦𝑥
𝑥𝑦
𝑦𝑥
𝑥
𝑦
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