Hello. Maybe you are right, but I came up with this answer.
The numbers before the "=" are multiplied, and the sum of the same numbers is added to the result.
For example:
3 + 4 = 19 --> (3*4) + (3+4) = 19
5 + 6 = 41 --> (5*6) + (5+6) = 41
1 + 3 = 7 --> (1*3) + (1+3) = 7
This way the order of the first two numbers doesn't matter.