Question

x-две третьих=одна васемнадцатых

Answer 1

Х=1/18+2/3
Х=1/18+12/18
Х=13/18

Answer 2

х - 2/3 = 1/18,
х = 1/18 + 2/3,
х = 1/18 + 12/18,
х = 13/18,

проверка:
13/18 - 2/3 = 1/18,
13/18 - 12/18 = 1/18,
1/18 = 1/18