Question

2x+y= 10 और x + 2y = 8 हो तो x+y की कीमत मालूम कीजिए​

Answer 1

Answer:

By elimination Method

Explanation:

2x + y = 10 ___( 1 )

x + 2y = 8 ___( 2 )

By multiplying 2 with ( 1 )

2 ( 2x + y = 10 )

4x + 2y = 20 ___ ( 3 )

( 3 ) – ( 2 )

4x + 2y = 20

– x – 2y = – 8

3x = 12

x = 4

Putting x's value in ( 1 )

2x + y = 10

2× 4 + y =10

8 + y = 10

y = 10 – 8

y = 2

so x + y

4 + 2

6