Solving Equations Containing Parenthesis

Solving Equations Containing Parenthesis

Steps

• Get rid the parenthesis by using the Distributive Property

• Simplify

• Add or Subtract

• Divide or Multiply

Example;

2 (y + 6) = 18

First multiply 2 times y

Then multiply 2 times 6

Is there any thing we need to simplify? (CLT)

Solve for y

Multiple Choice

What is the first step to solving this equation?

3 (x + 3) = 18

• add 3 and x

• multiply 3 times x

Multiple Choice

What is the next step in solving this equation?

3 (x + 3) = 18

• add 3 and 3

• multiply 3 times 3

Multiple Choice

Now you have;

3x + 3 =18

What do I do next?

• subtract 3x

• subtract 3 from both sides

• add 3 and 3x

Multiple Choice

Now I have 3x=15

What is my last step?

• subtract 3 from both sides

• multiply 3 from both sides

• divide by 3 on both sides

Multiple Choice

Complete the first step in this equation (the Distributive Property)

5 (x - 2) = 20

• 5x + 10 = 20

• 5x - 10 = 20

• 5x + 7 = 20

Multiple Choice

What do I do next?

5x - 10 = 20

(hint-get rid of the "third wheel" keep the happy couple together)

• subtract 5 on both sides

• minus 5 on both sides

• add 10 on both sides

• minus 10 on both sides

Multiple Choice

What is the last step?

5x=30

(when a number and a letter are right next to each other it means multiply, what is the inverse of multiply?)

• minus 5 on both sides

• add 5 on both sides

• multiply by 5 on both sides

• divide by 5 on both sides

Poll

Who is ready to practice?

• I'm ready!!

• I am so confused!

• I might need some more help first!