помогите решить (х-11 7/9)+5 5/18= 7 4/12

(х - 11 7/9) + 5 5/18 = 7 4/12(х - 106/9) + 95/18 = 88/12х - 106/9 = 88/12 - 95/18х - 106/9 = 264/36 - 190/36х - 106/9 = 74/36х = 74/36 + 106/9х = 74/36 + 424/36х = 498/36х = 249/18х = 13 15/18х = 13 5/6проверка:(13 5/6 - 11 7/9) + 5 5/18 = 7 4/12(83/6 - 106/9) + 95/18 = 88/12(249/18 - 212/18) + 95/18 = 88/1237/18 + 95/18 = 88/12132/18 = 88/1222/3 = 22/3