Eratosthenes was the chief librarian of the library at Alexandria. When the library was destroyed in the fourth century, A.D., it had a collection of over 500,000 Greek works on thousands of topics, making it a center for research and learning in the Egyptian and Greek worlds. Because he heard that she was the queen of denial. When working with algebraic inequalities, we don't have balance in the sense of equality. When solving inequalities correctly, we frequently do a transformation that either preserves the indicated number relation, or a transformation that reverses it.
Instructions say to solve the indicated inequality.
Note the communication in the solution process. In other words, any number that makes the given conditional statement true must have the property that it is less than -7. Mathematics is a powerful language. Use it properly, and use it efficiently. Evanston, IL, McDougal Littell , 2001.