Question

the sum of two numbers is 64 and their difference is 24. find the numbers

Answer 1

let the two numbers be x and y
x+y=64             1
x-y=24              2
adding eq 1 and 2
2x=88
x=44
substituting x=44 in eq2
44-y=24
-y=24-44
-y=-20
y=20

so the numbers are 20 and 44

Answer 2

X+y=64
If x>y,
X=64-y
64-y-y = 24
-2y=24-64
2y=40
Y=20.
X=44.