Question

Solve the following pair of liner equations by Substitution Method
x + y = 14 and x-y=4

Answer 1

Answer:

x=9,y=5

Step-by-step explanation: let x= 14-y

put x=14-y in x-y =4

14-y-y=4

14-2y=4

14-4=2y

10=2y

y=5

now, put y=5 in x+y=14

x=14-5

x=9

Answer 2

Step-by-step explanation:

x-y=4

x=4+y-------equation 1

as x+y=14 then substituting equation 1 in it

4+y+y=14

4+2y=14

2y=14-4

2y=10

y=5 substituting in equation 1

x=4+y

x=4+5

x=9

x=9,y=5