IXL - Matrix operation rules (Algebra 1 practice)

What are the dimensions of matrix X?

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Is this difference defined?

−

yes

Matrices can be subtracted only if their dimensions are exactly the same.

The first matrix has 3 rows and 4 columns.

The second matrix has 4 rows and 1 column.

Since the two matrices do not have the same number of rows or columns, their difference is not defined.

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