\left[ \begin{array}{ll}{3} & {x} \\ {4} & {y}\end{array}\right]=2 \cd – InterviewSolution

1.	\left[ \begin{array}{ll}{3} & {x} \\ {4} & {y}\end{array}\right]=2 \cdot \left[ \begin{array}{cc}{1.5} & {1} \\ {z} & {1}\end{array}\right]
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