math isn't about number. math is about manipulating infinity.
think of a point on a number line. lets say it's at 0.5. that the bullshit way to think about it. the units are things we made up. we could slap other units on the line and say the point is at 1.7423045. the point is not a number. the point is is just *there*. we make number to describe the point.
the point's name is pogo.
now imagine we have another point. we'll name it 'polly'. polly is moving toward pogo. but, polly got attacked by dark eldrich quadrilaterals from the third dimension which gave her a status effect of moving half her distance each time she takes a step. sucks to be polly.
so zombie polly is moving toward pogo. she moves 1 unit at first, then 0.5 units, then 0.25 units, then 0.125, etc, always moving closer, but always slowing down. will this hollow shell of polly ever make it to pogo?
no. but yes. it's irrelevant
points are just *there* at a position on the infinity. even when polly is moving an infinitely small amount and is an infinitely small distance away from pogo, if you zoomed in infinitely, she'd still be infinitely far away.
and here is the weird thing
two points are always infinitely far away from eachother.
so how do we say if a point's position is equal to another point's?
when it's "close enough" based on the units we're using. the units that we made up to give sense to the infinity.
on these units we invent functions like add, subtract, multiply, negate, and all that, just to move these incomprehensible vaguities of points around the infinity.
so as you can imagine, we try to make up whatever shit gets us the answer we want (without breaking the other shit we made up, of course)
enter higher learning
you will have a much easier time with higher math when you realize it's not about counting apples, but the result of centuries of enginedevs soiling napkins trying to find some god damn way to make rotations work right. we call them mathematicians.