Question

Solve the equations:

(8) 12 + a = 4a + 6

Answer 1

12 + a = 4a + 6
Subtracting 4a from both sides, we obtain:
$\Rightarrow$12 + a – 4a = 4a + 6 – 4a
$\Rightarrow$12 – 3a = 6
Subtracting 12 from both sides, we obtain:
$\Rightarrow$12 – 3a – 12 = 6 – 12
$\Rightarrow$ –3a = –6
Dividing both sides by – 3, we obtain:
$$\begin{gathered} \frac{-3a}{-3}=\frac{-6}{-3} \\ \Rightarrow a=2 \end{gathered}$$