Step-by-step explanation:
[tex]midpoint = ( \frac{ \frac{1}{3} - \frac{7}{3} }{2} , \frac{ \frac{5}{12} + \frac{7}{12} }{2} )[/tex]
[tex] = ( \frac{ \frac{ - 6}{3} }{2} , \frac{ \frac{12}{12} }{2} )[/tex]
[tex] = ( \frac{ - 2}{2} , \frac{1}{2} )[/tex]
[tex] = ( - 1,0.5)[/tex]
