Answer:
A. [tex]\frac{3}{4} = \frac{21}{28}[/tex]
Step-by-step explanation:
[tex]\frac{21}{28}[/tex] ÷ [tex]\frac{7}{7} = \frac{3}{4}[/tex]
21 ÷ 7 = 3
28 ÷ 7 = 4