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Posted by on Tuesday, May 5, 2009 at 1:13pm.

What is the difference between an equation and an expression? Include an example of each. Can you solve for a variable in an expression? Explain. Can you solve for a variable in an equation? Explain. Write a mathematical phrase or sentence for your classmates to translate.

Equation- is a mathematical statement, in symbols, that two things are exactly the same (or equivalent). Equations are written with an equal sign. Yes, you can solve for a variable in an equation.
Example: 2+3+5=10
Expression- is a symbol or combination of symbols that represents a quantity or a relationship between quantities. No, you cannot solve for a variable in an expression. Still, you can simplify it.
Example: 3 X n +10 =

  • Math - , Tuesday, May 5, 2009 at 2:24pm

    I would put a variable in your first example
    e.g. 2x + 3 = 13

    and in the second example, don't use a big X to show multiplication
    put it this way:

  • Math - , Tuesday, May 18, 2010 at 2:32am

    An expression consists of many things such as variables, constants, operation signs as well as numerals. An example of an algebraic expression is 5x-3, and an example of an algebraic equation is 19 + x= 47. Can you solve for a variable in an expression

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