Question

x= m,y=n is a soluton of ax+ by+ c =0 if an+bn+ c= 0

Answer 1

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Answer 2

x=m,y=n
therefore. am+bn+c=0-----eq i
an+bn+c=0------eq ii
solving - - -
therefore. am-an =0
am=an
put the value of eq iwe get ,

an+bn+c=0
n(a+b)=-c