Question

find the sum of 15 and the difference between 9 and​

Answer 1

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

x-y = 9 ----(2)

solving both the equations

2x = 24

x = 12

x-y = 9

12-9 = y

y=3

Therefore , the no.s are 12 and 3

Answer 2

Answer:

Step-by-step explanation:

x+y=15

x= 15-y ----(1)

x-y = 9 ----(2)

Substitute (1) into (2),

(15-y)-y=9

15-y-y=9

15-2y=9

2y=6

y=3

When y=3,

x= 15-3

=12