Vocabulary
Division Property of Equality, Subtraction Property of Equality
TEKS 7(1)(A), 7(1)(D), 7(10)(A)
Example Writing One-Step Equations
The length of an average toucan is about two thirds the length of an average blue-and-yellow macaw. Toucans are about 24 in. long. Write an equation to represent this situation.
Solution
The equation
TEKS 7(1)(D), 7(10)(A)
Intro
A two-step equation is an equation that has two operations. Many real-world problems need more than one operation to describe the situation. Consider the photographer's situation.
A photography student wants to buy a digital camera that costs $269.95. She plans to make a down payment of $100 and pay the remainder in five equal monthly payments. Write an equation to represent this situation.
Given information:
• The cost of the camera: $269.95
• The amount of the down payment: $100
• The number of monthly payments: five