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AlgebraicAardvark

As a mixed number, it's 64 and 4/10:

      [tex]64\frac{4}{10}[/tex]

As an improper fraction, it's 644/10:

    [tex]\dfrac{644}{10}[/tex]

This can also be reduced to 322/5:

    [tex]\dfrac{322}{5}[/tex]

et762572

Answer: [tex]64 \frac{2}{5}[/tex]

Step-by-step explanation:

=64+0.4

[tex]=64+\frac{2}{5}[/tex]

[tex]=64\frac{2}{5}[/tex]