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Unique solution = a1/a2 is not equal to b1/b2
3x +my -10=0 ,9x+12y-30=0
a₁ =3 a₂=9 ,b₁=m ,b₂=12 ,c₁ =-10,c₂ =-30
=3/9 ≠m/12 
=12×3 ≠9m ( cross mutlipilcation)
=36 ≠9m
=m≠ -4

2 3 2
so whats the ans?
for unique solution?
pls dear tell me then i will mark urs as brainliest]
it will not equal to -4
not 4
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