In subtraction, the minuend minus the subtrahend equals the difference.
The product of 15 and a number (when the number is n) is 15n. Subtract 8 from this and we have 15n-8
20
23/12
Simply reverse the question and you find that 4 + 6, which is 10 equals half of the unknown number. 10 x 2 = 20, which must therefore be the unknown number.
A number being added to another number is called an addend. The total of the numbers added together is called the sum.
addition a number
Is a number being multiplied by another number.
Deductions
difference
Another number added to a number is the sum (total) of the two numbers.
addendaddend
ok this is y am asking