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Expressions are:
General little statements that DO NOT have an equal sign:
2x-4
2m^3+5
Seven less than half a number squared
Twice the difference of a number and five.
Equations are:
Any statement that DOES have an equals sign(or equivalent):
4n+7=11
1/2 b-2=3
Twice a number increased by four is ten
The difference of a number and two is five
Equations and expressions are similar because they both have a value.
Equations and expressions are different because a equation is on sentence, and an expression is a phrase. An equation has a relation symbol, and a equation has no relation symbol.
Example for equation:
1. 10 is five less than a number.
10=x-5.
2. A number is less than five.
x<5.
Example for expression:
1. A number less than five.
x.
2. Five less than a number.
x-5.
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