( 1 12\12 - 1 7\12 = 5\12
3\8 - 1\6 = (18 - 8)\48 = 10\48 = 5\24
5\12 : 5\24 = 2
2\1 * 13\4 = 13\2 = 6.5
ответ: 6.5
(2-1 7/12):(3/8-1/6)*3 1/4=6,5
1) 2-1 7/12=5/12
2)3/8-1/6=9/24-4/24=5/24
3) 5/12:5/24=5/12*24/5=2
4) 2*3 1/4=2*13/4=13/2=6,5
