Giải các phương trình sau:

c) \(\frac{2}{3}x + 2\frac{1}{2} = 0.\)

g) \(\frac{{7x - 1}}{6} = \frac{{16 - x}}{5} - 2x\)

\(\frac{{5\left( {7x - 1} \right)}}{{30}} = \frac{{6\left( {16 - x} \right)}}{{30}} - \frac{{2x \cdot 30}}{{30}}\)

\(35x - 5 = 96 - 6x - 60x\)

\(35x + 6x + 60x = 96 + 5\)

\(101x = 101\)

 \(x = 1.\)

l) \(x - \frac{{x + \frac{{x + 1}}{5}}}{3} = 1 - \frac{{\frac{{1 - 2x}}{3}}}{5}\)

\(x - \frac{{5x + x + 1}}{5} \cdot \frac{1}{3} = 1 - \frac{{1 - 2x}}{3} \cdot \frac{1}{5}\)

\(x - \frac{{6x + 1}}{{15}} = 1 - \frac{{1 - 2x}}{{15}}\)

\[\frac{{15x - \left( {6x + 1} \right)}}{{15}} = \frac{{15 - \left( {1 - 2x} \right)}}{{15}}\]

\[15x - 6x - 1 = 15 - 1 + 2x\]

\[15x - 6x - 2x = 15 - 1 + 1\]

\[7x = 15\]

\(x = \frac{{15}}{7}.\)