This document contains a series of mathematical expressions with numbers and variables. There are over 50 lines of expressions with operations like multiplication, division, and addition of single digit and double digit numbers as well as variables represented by X. The document does not provide any context around the purpose or meaning of the mathematical expressions.

1. 18 8 X 2 10 3 X 3
3 X 7 8 9 X 2 16
7 X 2 16 4 X 7 6
5 X 3 27 4 X 4 9
6 X 3 24 5 X 9 30
6 X 5 49 4 X 2 15
6 X 8 45 48 5 X 5
8 X 9 12 54 7 X 9
actiludis.com
COLABORACIÓN EN
María Sanmartín Malvarez

2. actiludis.com
COLABORACIÓN EN
María Sanmartín Malvarez
50 7 X 10 7 X 3 22
45 7 X 7 3 X 9 20
6 X 7 40 7 X 8 48
30 2 X 10 4 X 6 18
33 21 40 2 X 11
4 X 3 35 6 X6 49
32 9 X 10 5 X10 70
8 X 8 36 81 6 X 2

3. actiludis.com
COLABORACIÓN EN
María Sanmartín Malvarez
9 X 9 72 36 7 X 7
56 8 X 6 64 9 X4
5 X 2 28 21 3 X 2
7 X 8 63 7 X 5 12
8 X 3 24 4 X 5 14
42 7 X 5 8 X 5 35
9 X 5 25 3 X 10 20
8 X 4 33 4 X 10 90