5 5 --⠀ and B = -2 -1 A = E₁ Given the following descriptions, determine the following elementary matrices and their inverses. a. The elementary matrix ₁ multiplies the first row of A by 1/3. ‚E₁¹ = = = E₂ 3 -3 -5 4 3 1 = 4 35 b. The elementary matrix E2 multiplies the second row of A by -6. E₂¹ = B =

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