Definition:
In the subtraction formula, the number before the minus sign is the minuend, the number after the minus sign is the minuend, and the number after the equal sign is the difference.
Subtraction is the number subtracted from the minuend in the subtraction formula. The minuend is the number that is subtracted.
Principle:
Subtraction is one of the four operations, and the operation of subtracting another number or quantity from one number or quantity is called subtraction. Subtraction is the number or quantity subtracted from the minuend in the subtraction formula. The minuend is the number or quantity that is subtracted. The mathematical method of subtracting one number or quantity from another can be summarized as m-s=r, where m is the minuend, s is the subtraction and r is the difference.