Supply the missing terms by using the words found in the box below. Mathematical sentence algebraic expression equation inequality 1._______________________ can either be an equation or an inequality. 2. An__________________ is a variable, a constant, or a combination of both which may be related by any of the four fundamental operations. 3. Mathematical sentence that denotes that two expressions are equal is called an_____________. 4. Mathematical sentence which denotes that two expression are not equal is called an___________.