PLSSS HELP IF YOU TURLY KNOW THISS

Answer:
[tex]\huge\boxed{\sf \frac{5}{8}}[/tex]
Step-by-step explanation:
[tex]\displaystyle =\frac{3}{8} +\frac{1}{4} \\\\LCM = 8\\\\= \frac{3}{8} + \frac{1 \times 2}{4 \times 2} \\\\= \frac{3}{8} + \frac{2}{8} \\\\Add\\\\= \frac{3+2}{8} \\\\= \frac{5}{8} \\\\\rule[225]{225}{2}[/tex]