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.
International airports near Cedar Falls, IA. 117 miles: Des Moines, IA (DSM / KDSM) Des Moines International Airport. 212 miles: Minneapolis, MN (MSP / KMSP) Minneapolis-Saint Paul International Airport. 263 miles: Chicago, IL (ORD / KORD) Chicago O'Hare International Airport.