Hi there!
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To turn [tex]3\frac{3}{4}[/tex] to a decimal, you must first convert it to an improper fraction, to do that you multiply the whole number (3) and the denominator (4).
[tex]4[/tex] × [tex]3[/tex] [tex]= 12[/tex]
Then you add the product of 3 and 4 (12) to the numerator (3).
[tex]3 + 12 = 15[/tex]
You then make the sum of the numerator and the product of the whole number and denominator into the numerator.
This leaves us with : [tex]\frac{15}{3}[/tex]
Hope this helped you!