Math, asked by cravikumar217, 5 months ago

तुलनात्मक विधि से बनना हैं
समीकरण हल करे
X + y =7
5x + 12y =7

Answers

Answered by keerthanakeeru427
1

Step-by-step explanation:

x+y=7. ______(i). ×5

5x+12y=7 ______(ii)

______________

5x +5y =35

5x +12y =7

(-) (-) (-)

__________

-7y=28

y=28/-7

y=-4

substitute y=-4 in equation (i)

x+(-4)=7-4

x-4=7

x=7+4

x=11

x=11, y=-4

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