What means to write in simplest form?

Writing in simplest form means expressing a mathematical fraction or expression in its most reduced state, where the numerator and denominator have no common factors other than 1. For fractions, this involves dividing both the numerator and the denominator by their greatest common divisor (GCD). In the case of algebraic expressions, it means combining like terms and factoring out any common factors. The goal is to make the expression as concise and clear as possible.