# Equivalent Expressions – Part 2

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

## Overview

We can use what we know about writing equivalent expressions to identify when two expressions are equal. For example…

Which expression is equivalent to z + z ?

Two expressions are equivalent when they result in the same solution regardless of
what number you plug in for the variable.

Let’s try plugging in the number 2 to see which answer is equivalent to z + z.

Both equations seem equivalent. But let’s try when z = 3

In order to be equivalent, the expressions must always be equal.

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True or False. 3e + 2 – 1 is equivalent to 3e + 1.

True or False. 4(3 – t) is equivalent to 12 – 4t.

Joe argues that n + 1 is equivalent to 1n. Why is he incorrect?

Jo argues that is equivalent to .

Why is she correct?

Georgia argues that p(1 + 2p) is equivalent to 4p.

Why is she incorrect?

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