Consider the following system of equations in three real variables x<sub>1</sub>, x<sub>2</sub> and x<sub>3</sub><br>2x<sub>1</sub> - x<sub>2</sub> + 3x<sub>3</sub> = 1<br>3x<sub>1</sub> - 2x<sub>2</sub> + 5x<sub>3</sub> = 2<br>-x<sub>1</sub> - 4x<sub>2</sub> + x<sub>3</sub> = 3<br>This system of equations has

Correct Answer: a unique solution