Question

$frac{2}{7 frac }$
- ($frac{3}{7 frac }$ - 1 $frac{1}{7 frac }$ ) =

Answer 1

2/7 - (3/7 -1 1/7) = 2/7 - 3/7 + 8/7 = -1/7 + 8/7 = 7/7 = 1