Question

The sum of two angles is 80 degrees and their difference is 20 degrees. How large is each?

Answer 1

Answer:

let the angles be x and y .

so :-

x+y=80

x-y=20

2x=100

x=50degree

y=30degree.

hope it helps u .

Answer 2

Explanation:

x+y = 80° - (1)

x-y = 20° -(2)

use elimination method ;

2y = 60°

y = 30°

and x+y = 80°

then put y = 30°

then x = 80-30

x = 50 °

so , x= 50° and y = 30°