The general gas law can be written as PV ÷ T = a constant. The general gas law, also known as the combined gas law, relates the pressure (P), volume (V), and temperature (T) of a gas. It states that the product of the pressure and volume of a gas divided by its temperature is a constant value. Mathematically, this is expressed as PV ÷ T = a constant. This means that if you increase the pressure of a gas while keeping the temperature and volume constant, the volume will decrease. Similarly, if you increase the temperature of a gas while keeping the pressure and volume constant, the volume will increase. The general gas law is a very useful tool for understanding the behavior of gases and predicting how they will behave under different conditions.