Solve the system by inverting the coefficient matrix and using the following theorem: If A is an invertible n x n matrix, then for each nx I matrix b, the system of equations Ax=b has exactly one solution, namel- x = A ¹b. x₁ + x₂ = 5 3x₁ + 4x₂ = 7 X₁ = x₂ = i i

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