\(d_1\) có \(\left\{ \begin{array}{l} VTCP\,\,\,\,\overrightarrow {{u_1}} = \left( {3; - 1;4} \right)\\ Qua\,\,\,\,\,M( - 7;5;9) \end{array} \right.\)
\(d_2\) có \(\left\{ \begin{array}{l} VTCP\,\,\,\overrightarrow {{u_2}} = \left( {3; - 1;4} \right)\\ Qua\,\,\,\,N(0; - 4; - 18) \end{array}...