Question

Sum of two numbers as 15, their difference is 7.
What are
the numbers ?​

Answer 1

Answer:

the 2 no.s are 4 and 11

Step-by-step explanation:

let x and y be the 2 no.s

given, that x+y = 15  and x-y=7

consider, (x+y) + (x-y)

=> (x+y) + (x-y) = 15+7

=> 2x = 22

=> x = 22/2

=> x = 11

so, substitute x=11 in x+y=15

=> 11+y = 15

=> y = 15-11

=> y = 4

so, the 2 no.s are 4 and 11

Answer 2

Answer:

The numbers are 4 and 11

Step-by-step explanation:

let x and y be the 2 no.s

given, that x+y = 15  and x-y=7

consider, (x+y) + (x-y)

= (x+y) + (x-y) = 15+7

= 2x = 22

= x = 22/2

= x = 11

on substituting  x=11 in x+y=15, we get

=11+y = 15

= y = 15-11

= y = 4

∴The 2 no.s are 4 and 11

Hope it helps

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