Please help I have been stuck on this for hours

Answer:
I have attached a screenshot below with the answers written down!
Step-by-step explanation:
[tex]5*3=15[/tex]
[tex]15*3=45[/tex]
Next
[tex]20*\frac{1}{2}=10[/tex]
[tex]10*\frac{1}{2}=5[/tex]
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Hope this helps!
Have a great day!
:)