Question

3x+y+7=0,x-7y-5=0 solve pratesthapan bedhe​

Answer 1

Answer:

3x+y+7=0 ...... i

x-7y-5=0 ...... ii

Multiplying ii by 3 , we get

3x-21y-15=0

now using elimination method,

3x-21y-15=0

3x+y+7=0

- - -

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0 -22y-22=0

-22y=22

[y=-1]

putting value of y in equation i

3x-1+7=0

3x+6=0

x=-2