# Sign up for an account

Already have a Quizlet account?

Log in.

###
Numerial expression

a numerical expression consists of numbers and operations 3+5

###
Variable

a variable is a letter used to represent one or more numbers. x=6

###
variable expression

a variable expression consists of numbers, variables, and operations 7+3+4x

###
Evaluate a variable expression

to evaluate a variable expression, substitute a number for each variable and evaluate the resulting numerical expression

###
verbal model

a verbal model describes a problem using words as labels and using math symbols to relate the words

###
Associative property of addition

(3 +2) 4 = 3+ (2 +4)

###
Identity property of addition

0 + b = b

###
Identity property of multiplication

1(-7) = -7

###
commutative property of multiplication

cd=dc

###
Equivalent numerical expressions

numerical expressions that have the same value

###
equivalent variable expressions

equivalent variable expressions have the same value for all values of the variable(s)

###
Terms of an expression

The parts of an expression that are added together are called terms 4y, -6. 3y

###
Like terms

like terms are terms that have identical variable parts 4y and 3y

###
Coefficient of terms

The coefficient of a term with a variable is the number parts of the term 4, 3

###
Constant term

A constant term has a number but no variable -6

###
Equation

an equation is a mathematical sentence formed by placing an equal sign, = between two expressions x +3 = 7

###
Solution of an equation

a solution of an equation with a variable is a number that produces a true statement when it is substituted for the variable. x + 2 = 4

2+2 = 4

###
Solving an equation

finding all solutions of an equation is called solving the equation

###
Inverse operations

Inverse operations are two operations that undo each other, such as addition and subtraction

###
Equivalent equations

Equivalent equations are equations that have the same solutions(s)

### Please allow access to your computer’s microphone to use Voice Recording.

## We can’t access your microphone!

### Click the icon above to update your browser permissions and try again

Example:

### Reload the page to try again!

Reload

## Press Cmd-0 to reset your zoom

## Press Ctrl-0 to reset your zoom

### It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

## Your microphone is muted

### For help fixing this issue, see this FAQ.