1
Q
Variable
A
A symbol usually a letter, that represents one or more numbers.
2
Q
Algebraic expression
A
A mathematical phrase that can include numbers, variables, and operation symbols.
3
Q
Equation
A
A mathematical sentence that uses an equal sign.
4
Q
Open sentence
A
An equation that contains one or more variables.
5
Q
A
1.1 -1.3
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