Помогите пожолуста решить
2 5/7 - 1 3/5 = 19/7 - 8/5= (95-56)/35= 39/35 39/35 / 1.3 = 39/35 / 13/10= 39x10 / 35x13 = 6/7 1 3/7 x 0.25= 10/7 x 25/100 = 25/70 = 5/14 6/7 - 5/14 = 12-5/14=7/14=1/2 2/5 - 7/18= (36-35)/90=1/90 1/90x15=15/90=1/8 1/2 / 1/8= 4