This document discusses solving equations with multiple steps by first undoing addition or subtraction, then undoing multiplication, to isolate the variable. It provides examples of writing word problems as mathematical equations and solving them. The assignment is to complete written exercises on page 47 involving solving two-step equations.

1. 2.4 EQUATIONS
WITH MORE STEPS
Chapter 2 – Solving Equations

2. Solving Equations


3. Two Step Equations
 Goal: get the variable alone
 How:
1. Undo the addition or subtraction
2. Undo the multiplication

4. Example: Solve


5. Example: Solve


6. Example: Solve


7. Example: Solve


8. Example: Solve


9. Example: Solve


10. Writing Equations
 To go from words to a mathematical statement
 Lookfor words/phrases that imply
operations/symbols
Addition Subtraction Multiplicatio Division Equals
n

11. Example: Write each sentence as
an equation. Then solve.
 8 more than twice a number is 18

12. Example: Write each sentence as
an equation. Then solve.
 6 less than 3 times a number is 9

13. Example: Write each sentence as
an equation. Then solve.
 When 9 is added to twice a number, the result
is 21

14. Assignment
 Page 47
 Written Exercises #10 – 54 odd, 55 – 62 all