Στο τετράδιο
Μάθημα 28ο
Αφαίρεση
Υ Π Ο Λ Ο Ι Π Α
=
2
-
1
=
1
=
4
-
2
=
2
=
3
-
1
=
2
=
3
-
2
=
1
=
1
-
1
=
0
=
1
-
=
=
2
1
2
-
2
2
0
0
-
=
=
0
=
3
-
3
=
3
=
0
=
=
-
0
0
4
-
4
4
4
3
=
=
=
-
=
0
=
3
-
1
=
4
=
4
-
3
=
1
2
1
-
1
4
-
2
2
3
1
-
2
3
-
2
1
4
1
3
4
3
1
1
0
1
1
1
0
2
0
2
2
2
0
-
-
-
-
-
-
3
0
-
3
3
3
0
-
4
0
4
4
4
0
-
-
Υ Π Ο Λ Ο Ι Π Α
=
5
-
1
=
4
=
5
-
4
=
1
=
5
-
2
=
3
=
5
-
3
=
2
=
5
-
0
=
5
=
5
-
5
=
0
5
-
1
4
5
4
1
5
2
3
5
3
2
-
-
-
4
-
5
1
5
1
4
-
5
5
0
5
5
0
-
-