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.
Locations farthest away from Cedar Rapids. 1  Amsterdam Island, French Southern Territories, 11,800 mi. 2  Port-aux-Francais, French Southern Territories, 11,427 mi. 3  Bunbury, Western Australia, Australia, 10,838 mi.  Mandurah, Western Australia, Australia, 10,806 1  mi. Albany, Western Australia, Australia, 10,779  mi.