How do you put 10.5 in a fraction?

To convert the decimal 10.5 into a fraction, first recognize that it can be expressed as (10.5 = 10 + 0.5). The decimal 0.5 is equivalent to the fraction (\frac{1}{2}). Therefore, you can write (10.5) as (10 + \frac{1}{2} = \frac{20}{2} + \frac{1}{2} = \frac{21}{2}). Thus, (10.5) in fraction form is (\frac{21}{2}).