Question

сделайте математику пожалуйста​

Answer 1

a). (5 - 2 4/5 × 1 1/9) × 27/34 = (5 - 14/5 × 1/9) × 27/34 = (5 - 14/45) × 27/34 = 211/45 × 27/34 = 211/5 × 3/34 = 633/170 = 3 123/170

б). (4,1 - 2 3/4) : (1 16/21 + 4 2/3) = (41/10 - 11/4) : ( (1 + 4) + (16/21 + 2/3) ) = 27/20 : (5 + 10/7) = 27/20 : (5 + 1 3/7) = 27/20 : (5 + 1 + 3/7) = 27/20 : (6 + 3/7) = 27/20 : 6 3/7 = 27/20 : 45/7 = 27/20 × 7/45 = 3/20 × 7/5 = 21/100 = 0,21

/ - дробная черта.