3x-5y=20 6x-10y=40 parrallel or coincidence
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3x-5y=20.......(i)
6x-10y=40......(ii)
a1= 3 b1= - 5 c1= - 20
a2= 6 b2= - 10 c2= - 40
a1/a2=b1/b2=c1/c2
3/6 = - 5/-10 = - 20/-40
1/2 = 1/2 = 1/2
Hence, here the equations are parallel.
6x-10y=40......(ii)
a1= 3 b1= - 5 c1= - 20
a2= 6 b2= - 10 c2= - 40
a1/a2=b1/b2=c1/c2
3/6 = - 5/-10 = - 20/-40
1/2 = 1/2 = 1/2
Hence, here the equations are parallel.
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