Question

the sum of 2 numbers is 30 and their diffrence is 20

Answer 1

Answer:

x + y = 30 & x-y=20 , 2x=50, x=25&y=5

Answer 2

Answer:

=> The two numbers are $25$, $5$.

Step-by-step explanation:

Given that,

The sum of $2$ numbers is $30$

And the difference between them is $20$

Let,

The two numbers are $x$, $y$

So, $x + y = 30$    $... (a)$  

$x - y = 20$    $...(b)$  

Now, add equations (a) and (b), we get  

=> $(x + y) + (x - y) = 30 + 20$  

=> $2x = 50$  

=> $x = 25$  

Substitute $x = 25$ in equation ( b ), we get  

=> $25 - y = 20$

=> $y = 25 - 20$  

=> $y = 5$  

Therefore, the two numbers are $25$, $5$.