The sum of 15 and 3 = 18. The process of 'summing' is adding up.
9
The numbers are 15 and 3. 15 * 3 = 45 15 + 3 = 18
3*5=15 5*3=15 15*1=15
11/15.
3+6+9...+45taking 3 common3(1+2+...+15) = 360
9
15
15
The numbers are 15 and 3. 15 * 3 = 45 15 + 3 = 18
3*5=15 5*3=15 15*1=15
3 (21+5)
To calculate two-thirds of a sum, you first find the sum of the numbers. Then, you multiply the sum by 2/3, which is the same as multiplying the sum by 2 and dividing by 3. This will give you the result of two-thirds of the sum. For example, if the sum is 15, two-thirds of the sum would be (15 x 2) / 3 = 10.
The two digits that have a sum of 8 and a product of 15 are 3 and 5. When you add them together, 3 + 5 equals 8, and when you multiply them, 3 × 5 equals 15.
-3+(-12) = -15
Get real, same as 3 x 15...
1 + 15 + 3 + 5 = 24
The sum of the first 5 numbers is 15. 1+2+3+4+5=15