1. Solving Equations Using Addition and Subtraction
The Golden Rule
Do onto others…….
The Golden Rule of Algebra
Do onto to one side of the equation the same thing you do to the
other side of the equation
If we add something to one side of the equation,
we must also add the same thing to the other side
If we subtract something to one side of the equation,
we must also subtract the same thing to the other side

2. Let’s Prove the Golden Rule
9 = True?
9 + 5 = True?
9 – 5 = 9 – True?
We are going to use the Golden Rule to solve equations

3. Solve by Adding Add 48 to each side Add 3 to each side

4. Solve by Subtracting Subtract 17 from both sides
Subtract 23 from each side
Subtract 17 from each side

5. Worksheet with partner Then go solo Show work
Practice
Worksheet with partner
Then go solo
Show work

6. and you must show step(s).
Homework
Page 330, evens
Must show work!!
you must copy problem
and you must show step(s).