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[" 7.If "p,q,r" are "3" real numbers sat...

[" 7.If "p,q,r" are "3" real numbers satisfying the matrix "],[" equation,[p qr]"[[3,4,1],[3,2,3],[2,0,2]]=[[3,0,1]]," then "2p+q-r],[" is equal to "],[[" a."-3," b."-1," c."4," d."2]]

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