(11,25-3 5/12+4,3-7 19/30): (7 7/12-5 5/6)=? по действиям пример!

11.25 = 45/4 = 45*3/4*3 = 135/12
4.3 = 43/10 = 43*3/10*3 = 129/30
55/6 = 55*2/6*2 = 110/12
1)135/12 - 35/12 = 100/12 = 25/3
2) 129/30 - 719/30 = -590/30 = -59/3
3) 25/3 + (-59/3) = -34/3
4) 77/12 - 110/12 = -33/12
5) (-34/3) / (-33/12) = (34*12)/(3*33) = (34*4)/33 = 136/33 = 4.(12)
ответ: 4.(12)
Скобки в ответе - это период, т е 4.(12) = 4.1212121212...