Arre, yeh to direct comparison se pata chal jaata hai. Agar a1/a2 ≠ b1/b2, ek unique solution. Agar a1/a2 = b1/b2 ≠ c1/c2, koi solution nahi (parallel lines). Agar all three ratios equal, infinite solutions (same line). Yeh mera morning radio jaisa hai — jab frequency match karti hai, bas clear signal aata hai, warna static ya do station ek saath.
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