28(-28)
The simplest answer is 1 and 28. There are an infinite number of pairs that can be multiplied together to make 28, and an infinite number of triplets, quads, etc.
The numbers are 13 and 41. And you do not need to know that they are prime in order to find the answer. The sum (54) and difference (28) provide all the necessary information.
28 multiplied by 8 is 224.
52 multiplied by 28 is 1456
The number is 48.
-15
call the first number x. The second number would be x + 2 (as they're consecutive odd numbers). The sum of both numbers would be x + x + 2 = 28, or 2x + 2 = 28. This can be evaluated to 2x = 26, x = 13. The first number would be 13, the second 15, 13 + 15 = 28.
The element with a mass number of 28 and 13 protons is aluminum (symbol Al). It has 13 protons, as indicated by its atomic number, and a mass number of 28, which is the sum of its protons and neutrons in the nucleus.
Four multiplied by -7 is -28.
The number 28 is a perfectly reasonable number. The sum of the digits of several numbers is 10. 19 for instance
28
-13 and -15
1/7th 1/7*28=4
28(-28)
4 and 2/3
4 x 7