Composition is based on math (rule of thirds being an example) as is perspective but we also, mostly unknowingly, use basic math – Addition, Subtraction, Multiplication and Division.
The following examples are drawn from my photos as I know the thought processes behind them.
An example would be when we see a scene that is pleasing to the eye. But an element is missing to make it a stronger photo. So we can either wait for that element to arrive or move position.
This photo was actually taken in a hall full of hundreds of people. They were a distraction so I changed my position to aim towards the only empty part of the hall, though there were still people walking past. I timed the shot just as one person had left the frame and before another arrived. Fortunately the woman was busying texting so I had about 10 seconds, an eternity in street photography!
I subtracted using two methods – time and space.
All mimics are based on this, though they usual only have two elements. Occasionally we can get three or more elements such as these groups sharing meals (though I’ve stretched that definition to include the young couple eating each others faces
When done well this can be like two separate photos combined together. It looks stronger if the elements are disparate.
Show us examples of your photos using basic math!