Find the value of aa for which v=⎡⎣⎢⎢⎢5a−74⎤⎦⎥⎥⎥v=[5a−74] is in the set h=span⎧⎩⎨⎪⎪⎪⎪⎪⎪⎡⎣⎢⎢⎢5−1−5−2⎤⎦⎥⎥⎥,⎡⎣⎢⎢⎢05−2−2⎤⎦⎥⎥⎥,⎡⎣⎢⎢⎢0
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