Addition and subtraction of mixed numbers with negatives

Evaluate $4\frac{4}{7}-\left(-8\frac{2}{7}\right)$447​−(−827​), writing your answer as a mixed number in its simplest form.

Evaluate $-8\frac{4}{7}+3\frac{3}{7}$−847​+337​, writing your answer as a mixed number in its simplest form.

Evaluate $6\frac{3}{11}-9\frac{6}{11}$6311​−9611​, writing your answer as a mixed number in its simplest form.