3.1: Find Equivalent Expressions
Select all the expressions that are equivalent to $7(2-3n)$. Explain how you know each expression you select is equivalent.
- $9-10n$
- $14-3n$
- $14-21n$
- $(2-3n) \boldcdot 7$
- $7 \boldcdot 2 \boldcdot (\text- 3n)$
Let’s see how equations can describe tape diagrams.
Select all the expressions that are equivalent to $7(2-3n)$. Explain how you know each expression you select is equivalent.
Draw a tape diagram to match each equation.
Use any method to find values for $x$ and $y$ that make the equations true.
To make a Koch snowflake:
We have seen how tape diagrams represent relationships between quantities. Because of the meaning and properties of addition and multiplication, more than one equation can often be used to represent a single tape diagram.
Let’s take a look at two tape diagrams.
We can describe this diagram with several different equations. Here are some of them:
For this diagram: