? + 7 = 15 so 15 - 7 = ?
The sum of an odd number and an even number is an odd number.
3 + 23 7 + 19 13 + 13
(7 x 8) + (8 x 8) = 15 x 8 = 120
It's not entirely clear from the wording of your question what it is you want to know. Seven is a one-digit number. The sum of its digits is 7. Seven has two factors: 1 and 7. That sum is 8.
7/15 False! Calculate the sum of 1/2 + 3*sum(n=2 to infinity) [ 1/10^n ] = 8/15 Or plug in 8/15 in your calculator to verify.
(15+7) +99
(x + 15)
the magic sum is 15
8x + 15 = 7 so 8x = 7 - 15: x = -1
7+8=15 15-6=9
If you add a single number - in this case minus seven - the "sum" is the number itself.
11+3+1=15 but 1 is not a prime number. 3 + 5 + 7 = 15
The two numbers with the sum of 15 and the product of 56 are: 7 + 8 = 15 7 x 8 = 56
If x + 7 = 15, then 15 - 7 = x, therefore x = 8.If x = 8, then 4x is equal to 4 x 8 = 32.
8 + 7 = 15
-7
(7 - x/4) = 15 x/4 = 7 - 15 x/4 = -8 x = -32 Verification: 7 - ( -32/4) = 7 - (-8) = 7 + 8 = 15