Question

हल कीजिए (प्रतिस्थापन विधि से)
(i)
x-y=4
3x+2y=27 ​

Answer 1

Answer:

x=7 and y=3

Explanation:

x-y= 4 ...(1). 3x+2y=27...(2)

multiplying equation 1 by 2

2x-2y=8.....(3)

add: equation 2 and 3

3x+2y=27.

2x-2y=8. ....-2y and +2y cancels

5x=35

x=35/5

x=7

put X=7 in equation 2

3x+2y=27

3(7)+2y=27

21+2y=27

2y=27-21

2y= 6

y=6/2

y= 3

Ans: X=7 and y=3

may this help you