The matrix A is row equivalent to the matrix B below. 3 -1 7 3 9 -1 7 6. -2 -2 7 2 4 3 = B 1 А — -5 9 3 3 4 1 -2 6 6 3 7 Find a basis for the null space of A and a basis for the column space of A. Then identify dim(Col A) and dim(Nul A).

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