An equation is simply a number sentence with a variable in the place of an unknown value. A variable is a letter that is substituted in place of the unknown value. It can be any letter you want, although x is most commonly used. To unlock this lesson you must be a Study.com Member.
Kids Free. Use this simple form to find hotels, motels, and other lodging near the Eastern Iowa Airport, which is located 9 miles south of downtown Cedar Rapids. There is no hotel in the Cedar Rapids Airport. For more info, visit our guides to Cedar Rapids Airport hotels and all Cedar Rapids hotels.
Kids Free. Use this simple form to find hotels, motels, and other lodging near the Waterloo Regional Airport in Waterloo, Iowa. There is no hotel in the Waterloo Airport. For more info, visit our guides to Waterloo Airport hotels and all Waterloo hotels.