The image is a worksheet with a list of problems written in Spanish. The problems are related to solving systems of linear equations and their solutions. 

The worksheet is divided into two sections. The top section is titled "Problems de la setmana 3" and has a table with three columns and three rows. The first column is labeled "Calculator el segundo determinant" and the second column is numbered "1.1.2". The table has three columns labeled "Regla de Serras" and "Troubles of the matrices" with the corresponding values.

There are also three rows of numbers and equations written on the worksheet. The equations are written in black ink and are arranged in a grid-like pattern. The numbers range from 0 to 9, and the equations are labeled as "1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, and 97.