Step 1:
To convert 4.2 to mixed number, first, you will convert to fraction.
[tex]4.2\text{ = }\frac{42}{10}[/tex]Step 2;
Simplify the fraction to it lowest term
[tex]\frac{42}{10}\text{ = }\frac{21}{5}[/tex]Step 3:
Next, convert the simplified fraction to mixed number.
[tex]\frac{21}{5}\text{ = 4}\frac{1}{5}[/tex]Final answer
[tex]4\frac{1}{5}[/tex]