math_celebrity Administrator Staff member Oct 27, 2016 #1 Since no variable name is defined, we pick 3 arbitrary variables. Let's pick x, y, and z. The sum of 3 numbers means we add them together: x + y + z
Since no variable name is defined, we pick 3 arbitrary variables. Let's pick x, y, and z. The sum of 3 numbers means we add them together: x + y + z