Equation Vocabulary

To summarize: if you do something to one side of an equation you have to do it to the other  

Opposite operations.  Mathematical operations that undo each other.

A letter that takes the place of an unknown value

In the example: 3x + 7= what is the constant

Drawing a conclusion given a set of rules is 

A statement that two mathematical expressions are equal.

We can't tell if an equation is true or false because there is a variable in it, so it is an

A number, a variable, the product or quotient of a number and a variable in an equation  

One, we can multiply it by a number without changing the value of the number

A value for a variable that makes an inequality or equation true

In the example:  3x + 7= what is the coefficient?

Zero, because we can add it to any number without changing the value of the number.

Combining like terms and using properties to make expressions easier to work with is called