49. $\frac{3n + 5}{2}=4+\frac{4n + 2}{4}$

Explanation:

Step1: Cross - multiply

$(3n + 5)\times4=(4n + 2)\times2$ $12n+20 = 8n + 4$

Step2: Move like - terms to one side

$12n-8n=4 - 20$ $4n=-16$

Step3: Solve for n

$n=\frac{-16}{4}=-4$

Answer:

$n = - 4$