Level 74
Level 76

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Variable

an alphabetic character representing a number, called the value, which is either arbitrary or not fully specified or unknown. It is usually a letter like x or y.

Coefficient

the decimal part

algebraic expression

An expression consisting of one or more numbers and variables along with one or more arithmetic operations

constant

A value that does not change.

Evaluate

To find the value of a mathematical expression.

substitute

To replace a variable with a number or another expression in an algebraic expression.

absolute value

The distance of a number from zero on a number line; shown by | |

Integers

the set of positive whole numbers and their opposites(negative numbers) and 0

Equation

A mathematical sentence that contains an equals sign

inequality

A mathematical sentence that shows the relationship between quantities that are not equivalent

inverse operation

Operations that undo each other

opposites

two numbers that have the same absolute value but have different signs

constant

3, 0, -1

Addition

to join two or more quantities

Subtraction

to take a quantity away from another

Multiplication

process of repeated addition

Division

process of breaking a quantity into equal parts

10

b + 4 when b=6

50

5 x y when y=10

5

z - 3 when z=8

7

k divided by 2 when k=14

32

m x 8 when m=4

45

q + 20 when q=25

55

d - 5 when d = 60

9

n divided by 3 when n=27