>>14159034>how is """2 + 2""" not equal 5 working machines?Because the spare parts are fractional parts of a machine, so they should be represented in the equation appropriately. You added 2.5 machines and 2.5 machines.
So 2.5 + 2.5 = 5.0; the math seems to check out, and units still matter.
If you defined the units of the equation as "working machines and parts equaling 1/4 of a machine", then 2+2 = 0, because at the end you no longer have the parts.
