Unit 3 Flashcard Practice

Front

Write as a verbal phrase: 24 - 3z

Back

the product of 3 and a number less than 24

Front

What is the first step in solving the equation 4x + 4 = 20?

Back

add 9 to both sides

Front

If % = y and & = -3, what does %%%& equal?

Back

3y + (-3)

Front

Which equation has the same solution as 4x + 4 = 20?

Back

2x + 18 = 26

Front

Which equation would you solve by adding 4 to both sides, then dividing both sides by 2?

Back

2x - 4 = 12

Front

What is the definition of a variable in mathematics?

Back

A symbol used to represent an unknown value.

Front

What does it mean to isolate a variable?

Back

To manipulate an equation to get the variable alone on one side.

Front

What is the distributive property?

Back

a(b + c) = ab + ac, distributing a across the sum.

Front

What is the difference between an equation and an expression?

Back

An equation has an equal sign, while an expression does not.

Front

What is the solution to the equation 2x + 4 = 12?

Back

x = 4