Question

Find the value of two numbers if their sum is 12 and their difference is 4

Answer 1

guess and check for this one

Answer 2

its system of operations

Answer 3

x + y = 12

x - y = 4

2x = 16

x = 8

8 + y = 12

y = 4

Answer 4

2 + 10 doesn't work because their difference is 8
3 + 9 doesn't work either because their difference is 6
try 4 and 8

Answer 5

yeah x=8 and y =4

Answer 6

When the sum and difference are known, the numbers are very easy to find.
Larger number = (sum+difference)/2 = (12+4)/2 = 8
Smaller number = (sum-difference)/2 = (12-4)/2 = 4
So the two numbers are 8 and 4.