Решите 4 2/5+3 5/6= 7 5/12-(1 5/8+2 1/24)=

4 2/5 + 3 5/6 = 4 12/30 + 3 25/30 = 7 37/30 = 8 7/30

7 5/12 - (1 5/8 + 2 1/24) = 3 3/4
1) 1 5/8 + 2 1/24 = 1 15/24 + 2 1/24 = 3 16/24 = 3 2/3
2) 7 5/12 - 3 2/3 = 7 5/12 - 3 8/12 = 6 17/12 - 3 8/12 = 3 9/12 = 3 3/4

7  5\12 - ( 1  5\8 + 2  1\24 )

3  15+1\24 =3  16\24 = 3  8\12

7  5\12 - 3  8\12 = 6  17\12 - 3  8\12 = 3  9\12 = 3  3\4