Question

pratisthapan vidhi see Hal gyat kijiy 2x+y=21
3x+5y=49​

Answer 1

Step-by-step explanation:

2x + y = 21 ....(1)

3x + 5y = 49 ...(2)

5( 2x + y ) = 5( 21 )

10x + 5y = 105

10x + 5y = 105

- 3x + 5y = 49

(-). ( -). (-)

__________

7x = 56

x = 8

2(8) + y = 21

16 +y = 21

y= 5