we can make a system of equations to solve this.
x+y=16
x-y=12
if we add both equations together, we get
2x = 28
divide each side by 2
x=14
plug in 14 for x in either of the first equations.
14+y=16
subtract 14 from both sides.
y=2
thus, our answer is the numbers 14 and two.
The integers are -7 and -5.
-2 and 5
5 and -3
-3, 5
The numbers -2 and -7 add together to make -9, and their difference is 5.
The integers are 4 and 9, so the equation would be 16+81=? and 16+81=97
5 + (-3) = 2 5 - (-3) = 8 The two numbers are therefore 5 and -3.
The formula to sum a series of numbers is: sum = 1/2 x number_of_numbers x (first_number + last_number) So to sum the integers 5 to 500: From 5 to 500 there are 500 - 5 + 1 = 496 integers, so sum = 1/2 x 496 x (5 + 500) = 125240
It need not be. 2 and 3 are consecutive integers and their sum is 5, not 31.
10
-15 and 5.
The answer is -5.