Vă rog acum urgent dau coroana la răspunsul corect!!!!

SALUT
(x -1 5/6):2 1/7 =7/10
(x-11/6):15/7=7/10
(x-11/6)*7/15=7/10
7/15x - 77/90=7/10
42x-77=63
42x=63+77
42x=140
x = 10/3 ≈3,(3)
EVERGREEN