Thursday, June 14, 2012


Variable-a letter that represents an unknown number.
eg. x,a,n
Expression-any single number or variable, or combination of operations(-,+,x) involving numbers and variables.
Value-a known or calculated amount.
\Constant-a number that does not change and it increases or decreases the value of an expression.
Numerical Coefficient-a number that multiplies the variable.

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