При х=18,2, у=7 1/13
15 1/6 :х+0,13у=91/6 : 182/10+13/100 * 92/13=91/6 * 5/91+92/100=5/6+23/25=125/150+138/150=263/150=1 113/150
при n=97.8, m=31
97.8:21 6/23 - 1/47 * 31=978/10 * 23/489 - 31/47=489/5*23/489 - 31/47=23/5 - 31/47=4 3/5 - 31/47=4 141/235 - 155/235=2 221/235
при с=67 1/7 , d=33.4
67 1/7 : 1 3/7 - 33,4:8 15/19=470/7 * 7/10 - 334/10 * 19/167=47 - 19/5=47-3,8=43,2