Question

the sum of 2 numbers is 17 and their difference is 7. what are the 2 numbers.( say the answer like this! for example, 9 and 2!)

Answer 1

Answer:

let the numbers be x and y

then

x+y=17

x=17-y

x-y=7

17-y-y=7

10=2y

y=5

x=17-5=12

so the numbers are 5 and 12