Question

Question 3
5x + 9 = 5 + 3x

Answer 1

5x + 9 = 5 + 3x
$\Rightarrow 5x-3x=5-9$
$\Rightarrow 2x=-4$
$\Rightarrow x=\frac{-4}{2}=-2$
To check,
$5x+9=5+3x\Rightarrow 5\times (-2)+9=5+3\times (-2)$
$\Rightarrow -10+9=5-6\Rightarrow -1=-1$
$\Rightarrow L.H.S.=R.H.S$.
Hence, it is correct.