Question

The sum of 2 numbers is 45 and their difference is 5

Answer 1

Step-by-step explanation:

let the numbers be x and y

given x+y=45

x-y=5

let x+y=45 be eqn 1

x-y=5 be eqn 2

eqn1+ eqn2

2x=50

x=25

Substitute x=25 in eqn 1 or 2

I am substituting in 1

25+y=45

y=20

x=25 and y=20

the two numbers are 20 and 25

Answer 2

Answer:

Step-by-step explanation:

let two nos. be x and y respectively.

according to given conditions

⇒ x+y=45⇒A

and

⇒ x-y= 5

⇒ x=y+5

using in A

⇒ y+5+y=45

⇒ 2 y+5=45

⇒ 2 y= 45-5

⇒ 2 y=40

⇒  y=40/2

⇒ y=20

as, x= y+5

   ⇒ x=20+5

   ⇒ x=25