Start in the bottom left corner and move either up or right, one square at a time, using the numbers and the mathematical signs along the way. What is the largest total you can make?

+	2	−	4	+	2
2	+	2	−	2	+
−	1	+	3	−	3
2	−	3	+	1	−
+	1	−	3	+	2
3	+	3	−	2	+

Note: this puzzle is not interactive, and the numbers cannot be clicked.

Puzzle Copyright © Kevin Stone