Question:
Tick (✓) the correct answer
If $\frac{x+1}{2 x+3}=\frac{3}{8}$, then $x=?$
(a) $\frac{1}{4}$
(b) $\frac{1}{3}$
(C) $\frac{1}{6}$
(d) $\frac{1}{2}$
Solution:
(d) $\frac{1}{2}$
$\frac{x+1}{2 x+3}=\frac{3}{8}$
$\Rightarrow 8(x+1)=3(2 x+3)$
$\Rightarrow 8 x+8=6 x+9$
$\Rightarrow 8 x-6 x=9-8$
$\Rightarrow 2 x=1$
$\Rightarrow x=\frac{1}{2}$
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