Question

खालील कृती पूर्ण करून एकसामयि
5x + 3y = 9 ----- (I)
2x - 3y = 12 ----- (II​

Answer 1

Answer:

$add \: equation \: (i) \: and \: (ii) \\ \\ 7x = 21 \\ \\ x = 3 \: \: \: \: and \: \: \: y = - 2$

Answer 2

adding (I) and (II)

5x+3y=9

+2x-3y=12

---------------------

7x=21

x=21÷7

x=3

substituting x value in equation in (I)

5x+3y=9

5(3)+3y=9

15+3y=9

3y=9-15

3y=6

y=6÷3

y=2

therefore x=3 and y=2