x + y = 17 + 23 = 40
11# - 1 = 2309 and 11# + 1 = 2311, both of which are prime.
p7# - 1 = 510509 and p7# + 1 = 510511, neither of which is prime.
82
x=26
But 5+5 = 10 and 5 is a prime number
If 2 numbers are different, but have the same absolute value, then one is the opposite of the other. Any number plus its opposite equals zero.
Eleven plus five minus two equals foureen. 11+5-2=14.
The conclusion is easy. Take your numbers 68 and 126, and subtract. 126 - 68 equals 58, so 58 is the value of x.
If a + b = 6, what is the value of 3a + 3b?
Fibonacci numbers
a prime number is a number that you can plus by one
The numbers are 13 and 18