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Unformatted text preview: x + 24 or 50 - y Example of an Equation: x + 24 = 76 or 50 y = 32 You can not solve for a variable in an expression unless you are given a number to substitute for the variable. Then it is called evaluating the expressions. Example: Evaluate 4x when x is 5. Then we can solve for x at this point. 4 x 5 = 20. You can solve for a variable in an equation because it is set equal to something. You solve by getting the variable by itself on one side of the equal sign using addition, subtraction, multiplication, or division. Example: 2x + 4 = 20 2x + 4 4=20-4 2x=16 2x/2 = 16/2 X = 8 For Class to Translate: 10x + 10 = 50...
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This note was uploaded on 06/26/2011 for the course MAT 116 taught by Professor Universityofphoenix during the Spring '09 term at University of Phoenix.
- Spring '09