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.
Midscale, smoke-free hotel near Cedar Rapids Airport 3 floors, 74 rooms and suites-elevator-AAA 2 Diamonds.
Fire-safe hotels and motels in Grand Rapids, Michigan: 1  Clarion Inn & Suites Airport, 4981 28TH St SE, Grand Rapids, MI 49512, Phone: (616) 956-9304, Fax: (616) 956-6617. 2  Red Roof Inn, 5131 28TH St SE, Grand Rapids, MI 49512, Phone: (616) 942-0800, Fax: (616) 942-8341.