$$\frac{ 4 }{ 5 } (3x+3)=2x+1$$
$x = -\frac{7}{2} = -3\frac{1}{2} = -3.5$
$$\frac{4}{5}\times 3x+\frac{4}{5}\times 3=2x+1$$
$$\frac{4\times 3}{5}x+\frac{4}{5}\times 3=2x+1$$
$$\frac{12}{5}x+\frac{4}{5}\times 3=2x+1$$
$$\frac{12}{5}x+\frac{4\times 3}{5}=2x+1$$
$$\frac{12}{5}x+\frac{12}{5}=2x+1$$
$$\frac{12}{5}x+\frac{12}{5}-2x=1$$
$$\frac{2}{5}x+\frac{12}{5}=1$$
$$\frac{2}{5}x=1-\frac{12}{5}$$
$$\frac{2}{5}x=\frac{5}{5}-\frac{12}{5}$$
$$\frac{2}{5}x=\frac{5-12}{5}$$
$$\frac{2}{5}x=-\frac{7}{5}$$
$$x=-\frac{7}{5}\times \frac{5}{2}$$
$$x=\frac{-7\times 5}{5\times 2}$$
$$x=\frac{-7}{2}$$
$$x=-\frac{7}{2}$$
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