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An expression does not equate to anything. An equation is equal to something.

Expression:

x+2

Equation:

x+4=2x

Equivalent expressions:

x+2 and 2x-2 if x=4

Equivalent equations:

x+4=2x and -x+10=2x if x=4

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Q: What is the difference between equivalent expressions and equivalent equations?
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expressions don't have an equal sign and equations do


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