Question

हल कीजिए तथा उत्तर की जाँच कीजिए:
(i) 2x-3y = 13
7x-2y= 20​

Answer 1

X = 2, y = -3

Step-by-step explanation:

2x - 3y = 13.......1 )

7x - 2y = 20......2 )

multiplying eqn 1 ) by 2

& eqn 2) by 3

therefore

4x - 6y = 26......3)

21x- 6y = 60......4)

subtracting eqn 3) from 4)

21x - 6y = 60

4x -6y = 26

(-) (+). (-)

therefore 17x = 34

x = 34/17

x = 2

substituting x=2 in eqn 1

therefore

4 - 3y = 13

4 - 13 = 3y

-9 = 3y

y=. -9/3

y= -3