###### Item 1.2.5.5.b

This is true. When two matrices are row equivalent, there is a sequence of scaling, interchange, and replacement operations that transforms one matrix into the other. These operations do not change the solution space of the matrix.

This is true. When two matrices are row equivalent, there is a sequence of scaling, interchange, and replacement operations that transforms one matrix into the other. These operations do not change the solution space of the matrix.