Unit 3 Flashcard: Expressions and Equations

Front

What does the expression 'eight fewer than the product of a number x, and four' represent mathematically?

Back

4x - 8

Front

Solve for x: -3(-4 + x) = 27. What is x?

Back

x = -5

Front

What is the result of the expression -2(4 - x)?

Back

-8 + 2x

Front

What is the simplified form of -12n - (-13n)?

Back

n

Front

If Hallie spends $9.50 on a drink and candy bars costing $2.00 each, how many candy bars did she buy if the drink costs $1.50?

Back

4

Front

Define an expression in mathematics.

Back

An expression is a combination of numbers, variables, and operators (like +, -, *, /) that represents a value.

Front

What is a variable in algebra?

Back

A variable is a symbol (often a letter) that represents an unknown value.

Front

What is the distributive property?

Back

The distributive property states that a(b + c) = ab + ac.

Front

What does it mean to simplify an expression?

Back

To simplify an expression means to combine like terms and reduce it to its simplest form.

Front

What is the difference between an equation and an expression?

Back

An equation states that two expressions are equal, while an expression does not include an equality sign.