(х+1/6)-7/15=1/10

(х + 1/6) - 7/15 = 1/10
х + 1/6 = 1/10 + 7/15
х + 1/6 = 3/30 + 14/30
х + 1/6 = (3 + 14)/30
х + 1/6 = 17/30
х = 17/30 - 1/6
х = 17/30 - 5/30
х = (17 - 5)/30
х = 12/30
х = 4/10
х = 0,4

Ответ: 0,4