Question

solve this sum by the elimination and cross multiplication methods : x+y=14, x-y=4.​

Answer 1

Answer:

x

+

y

=

14

...(i)

x

−

y

=

4

...(ii)

From equation(i), we get

x= 14 -y

Putting this value in equation(ii), we get

(14 -y) - y = 4

14 - 2y= 4

10 = 2y

y= 5

Putting this in equation(i), we get

x+5= 14

x=9

x= 9 andy= 5

Step-by-step explanation:

Answer 2

Answer:

y=5

x=9

Step-by-step explanation:

x+y=14

x-y=4

- +

2y=10

y=10/2

y=5

x=4+5

x=9