1. Solving 2-step equations
Chapter 7.3

2. Each one has 4 squares, so 4 is your answer!
Modeling - 2x + 3 = 11 =
Each one has 4 squares, so 4 is your answer!

3. Solving 2-Step Equations
Algebraic equations are solved backwards, so do the OPPOSITE math!
Since there are more than 1 steps to do you must follow the Order of Operations…but BACKWARDS!!!
Add/Subtract 1st
Multiply/Divide 2nd

4. 3y – 8 = 7
1st ADD 8 to both sides so he cancels out!
3y = 15
2nd DIVIDE by 3 to both sides so he cancels out!
/ /3
y = 5
Now the y is alone and you can plug the answer back in to CHECK your work!

5. 9 + 6b = 51
1st SUBTRACT 9 to both sides so he cancels out!
6b = 42
2nd DIVIDE by 6 to both sides so he cancels out!
/ /6
b = 7
Now the y is alone and you can plug the answer back in to CHECK your work!

6. y/2 + 2 = 10
1st SUBTRACT 2 to both sides so he cancels out!
y/ = 8
2nd MULTIPLY by 2 to both sides so he cancels out!
x x 2
y = 16
Now the y is alone and you can plug the answer back in to CHECK your work!

7. 1st SUBTRACT 1.8 from both sides so he cancels out!
7s = 14.0
2nd DIVIDE by 7 to both sides so he cancels out!
/ / 7
s = 2
Now the y is alone and you can plug the answer back in to CHECK your work!