Ответ:
- \(153-2x=148\);
\(-2x=-5\);
\(x=2,5\). - \(\frac{5x}{4}=80\);
\(5x=320\);
\(x=64\). - \(5\frac{1}{2}x-2\frac{3}{4}=6\frac{7}{8}\);
\(\frac{11}{2}x=\frac{55}{8}+\frac{22}{8}=\frac{77}{8}\);
\(x=\frac{77}{8}\cdot\frac{2}{11}=\frac{7}{4}=1\frac{3}{4}\). - \(0,4x=10,2-5,4=4,8\);
\(x=12\). - \(5x+0,04=1\);
\(5x=0,96\);
\(x=0,192\). - \(\frac{4,5}{2x}=0,3\);
\(4,5=0,6x\);
\(x=7,5\). - \(\frac{0,16}{0,5x}=0,08\);
\(0,16=0,04x\);
\(x=4\).
Ответ: 1) \(x=2,5\); 2) \(x=64\); 3) \(x=1\frac{3}{4}\); 4) \(x=12\); 5) \(x=0,192\); 6) \(x=7,5\); 7) \(x=4\).
