In which of Problems 19, 21, 23, 25, and 27 is the number of leftmost ones equal to the number of variables?

Data from Problem 19

Write the solution of the linear system corresponding to each reduced augmented matrix.

Data from Problem 21

Write the solution of the linear system corresponding to each reduced augmented matrix.

Data from Problem 23

Write the solution of the linear system corresponding to each reduced augmented matrix.

Data from Problem 25

Write the solution of the linear system corresponding to each reduced augmented matrix.

Data from Problem 27

Write the solution of the linear system corresponding to each reduced augmented matrix.

Transcribed Image Text:

1 0 0 0 200 1 0 0 1 -2 3 0