Learning to solve a proportion with a binomial

The video tutorial covers the concept of cross multiplication, emphasizing the importance of maintaining equality between cross products. It highlights the necessity of using parentheses to apply the distributive property correctly. The tutorial includes a step-by-step example problem to demonstrate these concepts in practice.

What is the key step to remember when performing cross multiplication?

• Always add the numbers first.

• Ensure the equality sign is maintained.

• Subtract the smaller number from the larger one.

• Ignore the equality sign.

Why is it important to write down your cross products?

• To ensure you don't forget the numbers.

• To make the equation look longer.

• To make it easier to add later.

• To maintain the balance of the equation.

What should you do when multiplying a number by a binomial?

• Ignore the binomial.

• Use parentheses to apply the distributive property.

• Add the numbers directly.

• Subtract the numbers first.

In the example provided, what is the result of 15 multiplied by 5?

• 50

• 25

• 75

• 100

What is the correct way to solve 3 * X + 3 * -3?

• 3X + 3

• 3X + 9

• 3X - 9

• 3X - 3