Question

The sum of two numbers is 17. Their difference is 45. Find the numbers. Separate your answers using a coma.

Answer 1

31 and -14

Answer 2

x+y=17

Answer 3

the difference is 45 so x-45=17

Answer 4

Let x be the the first number
Let y be the second number

then, x + y = 17
x - y = 45

solving the systems
2x = 62
x = 31

to determine y, insert 31 to any of the two equations
y = - 14

ANS. 31, -14

Answer 5

O.K.