The sum of two numbers is 9 and their difference is 6 What are the numbers?

Answer 1

Let the two numbers be x and y so their sum is x+y=9 and their difference is x-y=6 solve be elminination, so add the two equations and we have 2x=15 so x=15/2 Now plug this into either equation and find y so y = 9-15/2=3/2 so 15/2 and 3/2 I agree. Here is the Math. X + Y = 9 X - Y = 6

or x = 6 + Y (6 + Y) + y = 9

2Y + 6 = 9

2Y = 3

Y = 1.5 X = 6 + (1.5) = 7.5 Numbers are 7.5 and 1.5