Please help this is an 8 grade question

Adam drew two same size rectangles and divided them into the same number of equal parts. he shaded 1/3 of one rectangle and 1/4 of the other rectangle. what is the least number of parts into which both rectangles could be divided into?

Use set buikder notation to represent the following set: {, -2, -1, 0}

Which linear inequality is represented by the graph?