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1 
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A letter that is used to represent number in an algebra in expression  
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3 
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Two equivalent algebraic expressions separated by an equal sign 
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4 
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The comparison of two quantities by division  
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6 
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A number that is multiple by a variable  
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7 
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In a power, the number that tells how many times the base is used as a factor  
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8 
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A number, a variable or a product or quotient of numbers and variable that is added or subtracted in an algebraic expression  
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9 
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A term in an algebraic expression that does not contain variable  
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10 
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The result of subtraction  
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11 
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A statement that two expressions are not equal  
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