The answer is 19[tex]\frac{1}{4}[/tex]
First you must set up the equation
[tex]-2\frac{3}{4}[/tex]÷[tex]-\frac{1}{7}[/tex]
First, you must make the mixed number a improper fraction
[tex]-\frac{11}{4}[/tex]÷[tex]-\frac{1}{7}[/tex]
Then you must divide
[tex]\frac{77}{4}[/tex]
Finally, simplify
19[tex]\frac{1}{4}[/tex]
