(5,8-2 1/2*3,6:4 1/2):2+3 4/15 =
1) первести в дробь:
(5 8/10 - 2 1/2*3 6/10 :4 1/2):2 +3 4/15 = 5 1/9
1) 2 1/2*3 6/10 = 5/2*36/10 = 13/2
2) 13/2:4 1/2 =13/2 : 9/2 = 13/2*2/9 = 13/9
3) 5 8/10-13/9 = 58/10-13/9 = 522/90-130/90 = 392/90 = 196/45
4) 196/45:2 = 196/45*1/2 = 98/45
5) 98/45+ 3 4/15 = 98/45+49/15 = 98/45+147/45 = 245/45 = 49/9 = 5 4/9
2) (5,8-2,5*3,6:4,5):2 +3,27 = 5,17
1) 2,5*3,6 = 9
2) 9:4,5 = 2
3) 5,8-2 = 3,8
4) 3,8:2 = 1,9
5) 1,9+3,27= 5,17