Question

the sum of two number is 13 and their diffenece is 7

Answer 1

Answer:

The two numbers are 10 & 3

Step-by-step explanation:

Let us assume that the two numbers are X and Y

It has been given that the sum of the two numbers are 13

So, X + Y = 13

consider this as statement 1

It has also been given that the difference of the two numbers is 7

So, X - Y = 7

consider this as statement 2

Now on adding statement 1 and 2, we get

(X + Y) + (X - Y) = 13 + 7

2X = 20

=> X = 10

Substitute this value of X in statement 1

X + Y = 13

10 + Y = 13

=> Y = 3

X = 10 , Y = 3

Answer 2

Answer:

The numbers are 10 and 3

Step-by-step explanation:

suppose the numbers are X and Y

so, X+Y =13 and

X-Y = 7

_(+)_______________

2X =20

or, X =10

so Y =3