👉 In mathematics, a congruence is an equation that two expressions are equal. For example, if we have the equations 3x + 5 = 10 and 2x - 7 = 5, the first one is called a congruence because it defines the equality between these two expressions. A congruence can be satisfied or false depending on whether or not the values of x are congruent to each other modulo some common number. This means that if we have
