Show that the line `x-y-6=0,4x-3y-20=0` and `6x+5y+8=0` are concurrent. Also, find their common point of intersection.

Explanation

`x-y-6=0`

`x=y+6-(1)`

`4x-3y-20=0`

from equation 1

`4(y+6)-3y-20=0`

`y+4=0`

`y=-4`

putting this value in equation 1

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