Posted by scooby9132002 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.
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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  Reiny, 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:
3(n+10) 
Math  Anonymous, 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 5x3, and an example of an algebraic equation is 19 + x= 47. Can you solve for a variable in an expression