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I did them with Cramer's rule and did not need the solution in the matrix. Thanks for the help.

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- #1

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I did them with Cramer's rule and did not need the solution in the matrix. Thanks for the help.

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HallsofIvy

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Whether you include the "solutions of the equations" (by which I

One way of solving a matrix equation, or system of equations converted to matrix form, is to find the inverse of the matrix multiplying the "unknown" vector and multiply both sides of the equation by it. In that case the matrix must include only the coefficients.

But I suspect you are talking about using row reduction. In that case, in order to apply the same row operations to the "right-hand side", you form the "augmented matrix", including the right-hand side as an additional column.

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exactly what I was asking. Thanks a bunch.

Whether you include the "solutions of the equations" (by which Ithinkyou mean the right-hand side of the equations: the numbers not multiplying a variable- surely you do not mean the "solutions" to the equations!) depends on what you want to do with the matrix!

One way of solving a matrix equation, or system of equations converted to matrix form, is to find the inverse of the matrix multiplying the "unknown" vector and multiply both sides of the equation by it. In that case the matrix must include only the coefficients.

But I suspect you are talking about using row reduction. In that case, in order to apply the same row operations to the "right-hand side", you form the "augmented matrix", including the right-hand side as an additional column.

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