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.
Nearest major airport to Cedar Falls, Iowa: The closest major airport to Cedar Falls, Iowa is Waterloo Regional Airport (ALO / KALO). This airport is in Waterloo, Iowa and is 4 miles from the center of Cedar Falls, IA. If you're looking for domestic flights to ALO, check the airlines that fly to ALO.