Question

e.6)
If x and y are the angles forming a linear pair such that x - y = 60° and
x + y = 80°, then y is equal to​

Answer 1

Answer:

by using elimination method

x-y=60°

x+y=80°

we get 2x=140°

x=70°

y=10°

hope it helps...

Answer 2

The value of ∠ y = 10°

Step-by-step explanation:

The given pair of linear equations are:

x - y = 60°                        ........... (1)

and  x + y = 80°                  ........... (2)

To find, the value of ∠ y = ?

Adding equations (1) and (2), we get

x - y + x + y = 60° + 80°      

⇒ 2x = 140°    

⇒ x = 70°    

Put  x = 70° in equation (1), we get

70° - y = 60°  

⇒ y = 70° - 60° = 10°

Thus, the value of ∠ y = 10°