Đáp án đúng: C
Giải chi tiết:\(\begin{array}{l}15 - 2\left( {x - 1} \right) = - 3\\\,\,\,\,\,\,\,\,\,\,\,2\left( {x - 1} \right) = 15 - \left( { - 3} \right)\\\,\,\,\,\,\,\,\,\,\,\,2\left( {x - 1} \right) = 18\\\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,x - 1\,\,\,\,\, = 18:2\\\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,x - 1\,\,\,\, = 9\\\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,x\,\,\,\,\,\,\,\,\,\,\,\, = 9 + 1\\\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,x\,\,\,\,\,\,\,\,\,\,\,\, = 10.\end{array}\)
Chọn C
