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 Expressions
 Before you start working on expressions be sure that adding, subtracting, multiplying and dividing whole numbers, decimals, and fractions are not difficult for you. If they are go back and review any of the above that you are unsure of. To play the movie, the Flashplayer must be installed. Your browser needs to be configured to use the FlashPlayer as an application (see your browser preferences). If you are using Internet Explorer for Windows, you must install the latest Flash Active Plug in. (See www.macromedia.com)
 Expressions consists of: variables (another name for letters) - always h = variable a coefficient (the number in front of a variable)- sometimes 2k coeffient and variable an operation sign (tells you what to do) sometimes + - x / a constant (number that stands alone - sometimes c + 6 equal sign - never Variables can be simplified c + c + c becomes 3c Notice the variable is never capitalized. 3(h + 5) becomes 3h = 5 m (a + 4) becomes am + 4m z (9 - n) becomes 9z - nz 4g + 6 g becomes 10 g 19b - 8b becomes 11b If d is 7 then 4d becomes 4 x 7 = 28 Easy isn't?