-16
A single number cannot have a sum or a product - a sum or product is used to compare two or more numbers.
It could be: 2x+16 = -24 in which case the value of x is -20
It is: 2*(6+4) = 20
20+x
20
-20 because -20 + 36 = 16
It is 20.
20
-16
A single number cannot have a sum or a product - a sum or product is used to compare two or more numbers.
20
4 + 2*n ≥ 20
There aren't any numbers like that. You might be thinking of 28, which has a sum of all its factors equal to twice itself, making it a perfect number. Proper factors are a different set.
47 Impossible problem!
It could be: 2x+16 = -24 in which case the value of x is -20
It is: 2*(6+4) = 20