Answer:
4 [tex]\frac{3}{4}[/tex]
Step-by-step explanation:
To calculate the amount left subtract the amount used from the total amount in the tub, that is
7 [tex]\frac{1}{2}[/tex] - 2 [tex]\frac{3}{4}[/tex]
Change the mixed numbers to improper fractions
7 [tex]\frac{1}{2}[/tex] = [tex]\frac{15}{2}[/tex], 2 [tex]\frac{3}{4}[/tex] = [tex]\frac{11}{4}[/tex]
The subtraction can now be expressed as
[tex]\frac{15}{2}[/tex] - [tex]\frac{11}{4}[/tex]
= [tex]\frac{30}{4}[/tex] - [tex]\frac{11}{4}[/tex] ← like denominators
= [tex]\frac{19}{4}[/tex] = 4 [tex]\frac{3}{4}[/tex]
