Answer:
see explanation
Step-by-step explanation:
(1)
[tex]\frac{2}{5}[/tex] = [tex]\frac{?}{10}[/tex] = [tex]\frac{4}{10}[/tex] → ? = 4
The numerator/ denominator are multiplied by 2
(2)
[tex]\frac{?}{40}[/tex] = [tex]\frac{1}{20}[/tex] = [tex]\frac{2}{40}[/tex] → ? = 2
The numerator/ denominator are divided by 2
(3)
[tex]\frac{?}{9}[/tex] = [tex]\frac{9}{27}[/tex] = [tex]\frac{3}{9}[/tex] → ? = 3
The numerator/ denominator are multiplied by 3
