Question

The sum of two numbers is 15. One number is three less than the other. Find the numbers.

Answer 1

let the numbers x and y

sum of two numbers is x + y = 15 eq 1

given { one number is 3 less than so : y = x-3}

put in equation

x + x -3 = 15

2x - 3 = 15

2x = 18

x = 9

y = ( x-3 ) = ( 9 -3) = 6