15 - 7 = 8, and an alternate representation is 7 + 8 = 15.
The subtraction equation 15 - 7 = 8 indicates that when we subtract 7 from 15, the result is 8. Another way to express this relationship is by recognizing that adding 8 to 7 also yields 15. The concept of subtraction is essentially the inverse operation of addition, and these equations illustrate that by starting with the initial value (15) and either subtracting 7 or adding 8, we arrive at the same result.
This duality in representation highlights the fundamental relationship between addition and subtraction, where they are reversible processes that can be used interchangeably to express the same mathematical relationship.