Circle+box =39 (Equation 2)

In the above two formulas, there are boxes. You can subtract 33 from 39 to find out the difference between a circle and a triangle.

39-33= circle-triangle

6= circle-triangle

Triangle +6= circle (Equation 3)

Triangle+circle =34, if it is brought into Equation 3, it becomes:

Triangle+triangle +6=34

2 triangles =34-6

=28

Triangle = 14

Box =33- 14

= 19

Circle =39- 19

=20