(P1.23)- Show that if the linear equations x1 + kx2 = C and x1 + lx2 = D have the same solution...

(P1.23)- Show that if the linear equations x1 + kx2 = C and x1 + lx2 = D have the same solution set, then the two equations are identical (i.e., k = l and c = d).

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