Question
0.4x – 1.2 = 0.3x + 0.6
✓
Answer
$\begin{aligned} & 0.4 x-1.2=0.3 x+0.6 \\ & \Rightarrow 0.4 x-0.3 x=0.6+1.2 \\ & \Rightarrow 0.1 x=1.8 \\ & \Rightarrow \frac{1}{10} x=\frac{18}{10} \\ & \Rightarrow x=\frac{18}{10} \times \frac{10}{1}=18 \\ & \therefore x=18\end{aligned}$
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