1. ( 8 1/5 +1 4/5 ) - 3 4/5 +2 1/5 = ?
(8 1/5+1 4/5)-3 4/5 + 2 1/5=3 1. 8 1/5+1 4/5=9 2. 3 4/5 + 2 1/5= 6 3. 9-6=3