Answer:
25/28
Step-by-step explanation:
Find a common denominator for both fractions.
Since 4 * 7 = 28, I will use 28 as a denominator.
[tex]\frac{3*7}{4*7}=\frac{21}{28}\\\\\\\frac{1 * 4}{7 * 4}=\frac{4}{28}\\\\\\\frac{21}{28}+\frac{4}{28}=\frac{25}{28}[/tex]
Hope this helps!