A male polar bear is 2 \frac{7}{9} meters long. A female polar bear is 1 \frac{5}{6} meters long. Sidney thinks the male polar bear is 1 \frac{2}{3} meters longer than the female polar bear. She is incorrect. How did she get that answer?
Which subtraction equation is shown by the model?
\frac{7}{10} - \frac{3}{5} = \frac{1}{10}
\frac{3}{5} - \frac{7}{10} = \frac{4}{10}
\frac{6}{10} - \frac{1}{10} = \frac{5}{10}
\frac{7}{10} - \frac{3}{2} = \frac{1}{10}
