Question

the sum of two numbers is ten and their difference is 8, what are the two numbers

Answer 1

Let the Number be x and y

so x+y=10

x-y=8

by substitution method

x=10-y

So in 2nd equation

(10-y)-y=8

10-y-y=8

-2y=-2

y=1

x=10-1=9

Answer 2

Step-by-step explanation:

let first no be x and second be y

a/q

x+y=10. .....eq1

x-y= 8. ......eq2

adding eq1 and 2 we get

2x=18

x=9

and y = 1