$\text{April} \times \text{May} - \text{June} = \text{December} - \text{January}$
$\text{September} \div \text{November} \times \text{December} = \text{March} \times \text{March}$
$\text{January} \times \text{February} \div (\text{February} + x ) = \text{April}$
These three equations follow a certain pattern. What month of the year fits in the spot marked $x$? Please provide a logical explanation as well.