Question

the sum of two numbers is 15 and the difference is 3

Answer 1

Answer:

hence the two numbers are 9&6

Answer 2

Answer...............

Let the two numbers be x and y.

It is given that the sum of the numbers is 15 that is

x+y=15..........(1)

Also the difference of the numbers is 3 that is

x−y=3..........(2).

Add equations 1 and 2 to eliminate y, because the coefficients of y are opposite. So, we get

(x+x)+(y−y)=15+3

i.e. 2x=18

i.e. x=9

Substituting this value of x in (1), we get

9+y=15

i.e. y=15−9=6

Hence, the two numbers are 9 and 6.

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