For any number \(a\), $$\large{a = a}$$ In words: Any quantity is equal to itself. Examples: $$2 = 2$$ $$3 + 7 = 3 + 7$$ $$4\pi = 4\pi $$ $$ - 3{y^2} = - 3{y^2}$$ $$a + {b^2} - {c^3} = a + {b^2} - {c^3}$$ Math Topics Properties of Equality