What is the difference between Boyle's law and Charle's law ?

Charles' Law

" For a fixed mass of gas at constant pressure, the volume is directly proportional to the Kelvin temperature."

We have Ideal gas law PV = nRT

Dividing both sides by p, you will get

V/T = nR/P

Right hand side is constant

That means that V = constant x T, which is Charles' Law.

V₁/ T₁ = V₂ / T₂

Boyle's law

" The absolute pressure exerted by given mass of an ideal gas is inversely proportional to the volume it occupies if the

temperature and amount of gas remain unchanged within a closed system."

PV = n R T

According to Boyle's law n, T are constant. So Right hand side is some constant, let's say Z

PV = Z

So P₁ V₁ = P₂ V₂ { Boyle's Law }