Complete the Decimal Equation: 2.4 = ___

To convert the decimal $2.4$ to a mixed number, we need to follow these steps:

• Step 1: Identify the whole number part and the decimal part. Here, the whole number is $2$ and the decimal part is $0.4$.
• Step 2: Convert the decimal part $0.4$ to a fraction. To do this, recognize that $0.4$ can be written as $\frac{4}{10}$ since there is one digit after the decimal point, which implies the denominator is $10$.
• Step 3: Simplify the fraction $\frac{4}{10}$. Divide the numerator and the denominator by their greatest common divisor, which is $2$. Thus, $\frac{4}{10} = \frac{2}{5}$.
• Step 4: Combine the whole number and the simplified fraction to form the mixed number. The whole number $2$ and the fraction $\frac{2}{5}$ together give $2\frac{2}{5}$.

Therefore, the decimal $2.4$ is equivalent to the mixed number $2\frac{2}{5}$.