# Determine whether the given system is solvable. Thank you!?

1. x + 2y + 3z = 1

-x + y = -2

2x -3x + z = 0

2. x + 2y + 3z = -1

4x + 5y + 6z = 0

7x + 8y + 9z = 1

Hint: When a coefficient matrix is singular (non-invertible,)

Gaussian elimination will determine solvability in a definite way.

-x + y = -2

2x -3x + z = 0

2. x + 2y + 3z = -1

4x + 5y + 6z = 0

7x + 8y + 9z = 1

Hint: When a coefficient matrix is singular (non-invertible,)

Gaussian elimination will determine solvability in a definite way.

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