Вычислите (3 1/4 + 2 1/6 ):2 3/5+1 1/6 =                            .

(3 1/4 + 2 1/6 ):2 3/5+1 1/6 = 3,251) 3 1/4+ 2 1/6=5 +3/12+ 2/12= 5 5/122) 5 5/12: 2 3/5=65/12 : 13/5= 65/12×5/13= 325/156= 25/123) 25/12+ 1 1/6= 1+ 25/12+2/12= 1 27/12= 1 9/4= 3 1/4= 3,25