Add:

6p + 4q – r + 3, 2r - 5p – 6, 11q - 7p + 2r – 1 and 2q – 3r + 4

To add the expressions, we have to arrange the given expression in the form of rows and then add the expression column wise, so we have;



So, the answer is;


– 6p + 17q


7