Hey there :)
[tex] \frac{1}{3} + (- \frac{7}{4} )[/tex]
[tex] \frac{1}{3} - \frac{7}{4} [/tex]
Find the least common denominator which is 3 x 4 = 12
[tex] \frac{1(4)}{3(4)} - \frac{7(3)}{4(3)} [/tex]
[tex] \frac{4}{12} - \frac{21}{12} [/tex]
[tex]- \frac{17}{12} [/tex]
[tex]-1 \frac{5}{12} [/tex]
