3/7 х - 2 1/6 = 5 1/3

18х-91=224 18х=224+91 18х=315 х=315/18 х=17,5

3/7x=5 1/3+2 1/6                 16/3+13/6=(32+13)/6=45/63/7x=45/6x=45/6:3/7                            45/6:3/7=45/6*7/3=315/18= 17 1/2x= 17 1/2