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A conditional equation only has a __ number of solutions

finite

A contradiction equation has __ solutions.

no

An identity equation has __ solutions.

infinite

To check a linear equation, input the answer you get for x then press the __ key. Then input the equation, then press the 2nd and then __ key. Choose the equals mark, press __ , then put in what the equation should equal. 1 means __ and zero means __.

store, math, enter, true, false

To get rid of a fraction in a linear equation, multiply everything by the __ __ __.

least common denominator

When checking linear equations on a calculator, if there is more than one term in the denominator or numerator, then make sure you use __!!!

parentheses