(375:left( {x - 3} right) = 12)
Giải chi tiết:
(begin{array}{l}375:left( {x - 3} right) = 12,,,,,,,,,,,,,x - 3,,, = ,375:12,,,,,,,,,,,,,x - 3,,, = ,31,25,,,,,,,,,,,,,x,,,,,,,,,, = ,,31,25 + 3,,,,,,,,,,,,,x,,,,,,,,,, = ,,,,,,34,25,,,,,,,,,,,,,end{array})
Chọn B.