Question

Evaluate the following expression using the values given.

Find 3x - y - 3z if x = -2, y = 1, and z = -2.

-13

-1

1

13
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Choose the best definition for the following term: variable.

A letter that holds the place for some unknown value in mathematics.

A process where you must look for terms that have identical variable parts and then combine their coefficients.

A process where if two things are equal, one can be put in the place of the other and nothing will change.

Terms that have identical variable parts
&
Simplify the following expression.