Question

What are those two numbers whose sum is 58 and difference is 28

Answer 1

let on eno =x
2nd no y
x+y=58 (eq1)
ATQ
X-y=28(eq2)

x+y-(x-y)=58-28
x+y-x+y=30
2y=30
y=15
x=58-15=43

Answer 2

a-b=28
a+b=58
a=28+b
28+b+b=58
28+2b=58
2b=30
b=15&a=43