Giải hệ phương trình \(\left\{ \begin{array}{l}\frac{4}{{x - 1}} + \frac{{y - 15}}{{y + 2}} = \frac{2}{5}\\\frac{{x - 9}}{{x - 1}} + \frac{{30}}{{y + 2}} = 2\end{array} \right.\)
A.\(\left( {x;\;y} \right) = \left( {16;\;20} \right).\)
B.\(\left( {x;\;y} \right) = \left( {16;\;18} \right).\)
C.\(\left( {x;\;y} \right) = \left( {17;\;18} \right).\)
D.\(\left( {x;\;y} \right) = \left( {17;\;20} \right).\)
A.\(\left( {x;\;y} \right) = \left( {16;\;20} \right).\)
B.\(\left( {x;\;y} \right) = \left( {16;\;18} \right).\)
C.\(\left( {x;\;y} \right) = \left( {17;\;18} \right).\)
D.\(\left( {x;\;y} \right) = \left( {17;\;20} \right).\)
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Hóa Học lớp 12
