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(3) Determine the value of x +y if\left[ \begin{array}{cc}{2 x+y} & {4 x} \\ {5 x-7} & {4 x}\end{array}\right]=\left[ \begin{array}{cc}{7} & {7 y-13} \\ {y} & {x+6}\end{array}\right] |
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Answer» thank you |
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