Question

* -5\6=3\4-1\2
* -9\10=8\7-11\21
* +8\9=3\4+7\2
* +6\7=37\32 -5\28

Answer 1

$\frac{13}{12} - \frac{5}{6} = \frac{3}{4} - \frac{1}{2} \\ \frac{1}{4} = \frac{1}{4}$

$\frac{319}{210} - \frac{9}{10} = \frac{8}{7} - \frac{11}{21} \\ \frac{13}{21} = \frac{13}{21}$

$\frac{121}{36} + \frac{8}{9} = \frac{3}{4} + \frac{7}{2} \\ \frac{17}{4} = \frac{17}{4}$

$\frac{27}{224} + \frac{6}{7} = \frac{37}{32} - \frac{5}{28} \\ \frac{219}{224} = \frac{219}{224}$