Ответ:
\[1.2(x-4)+4.6=0.3(3+x)\]
\[1.2x-4.8+4.6=0.9+0.3x\]
\[1.2x-0.2=0.9+0.3x\]
\[0.9x=1.1\]
\[x=\frac{11}{9}\]
Ответ: \(x=\frac{11}{9}\).
\[1.2(x-4)+4.6=0.3(3+x)\]
\[1.2x-4.8+4.6=0.9+0.3x\]
\[1.2x-0.2=0.9+0.3x\]
\[0.9x=1.1\]
\[x=\frac{11}{9}\]
Ответ: \(x=\frac{11}{9}\).