the sum of two number are 17 and the difference is 4

Answer 1

Let's represent one of the numbers with the variable x and the other number with the variable y.

Then x + y = 17

and x - y = 4

We can combine these two equations (using elimination):

x + y = 17

x - y = 4

2x = 21

x = 10.5

x + y = 17

10.5 + y = 17

y= 6.5

One of the numbers is 10.5 and the other is 6.5