Question

the sum of two numbers is 30 and their difference is 4.Find the number

Answer 1

here ans is x=4 y=0
i hope u got it

Answer 2

let 1st no. is x
and 2nd is y
ko
case 1.
ATQ
x+y=30.................1
And. x-y=4...................2

by elimination method
x+y=30
x-y=4
...............
2x=34
x=17

Now put value in eq.1
17+y=30
y=30-17
y=13