Ответ:\(\frac{4}{9}x=3.6\);\(x=3.6:\frac{4}{9}=3.6\cdot\frac{9}{4}=8.1\).\(4\frac{2}{7}x=1\);\(\frac{30}{7}x=1\);\(x=1:\frac{30}{7}=\frac{7}{30}\).Ответ: 1) \(x=8,1\); 2) \(x=\frac{7}{30}\).