Solve a proportion by using the cross product and parenthesis ex 20, (b+13)/2 = –5b/3

The video tutorial demonstrates how to solve a proportion using the cross product method. It begins with an introduction to the concept, followed by a detailed explanation of multiplying cross products. The instructor then applies the distributive property to simplify the equation. Finally, the steps to solve for the variable B are shown, concluding with a summary of the process.

What is the first step in solving a proportion using cross multiplication?

• Divide the terms

• Subtract the denominators

• Add the numerators

• Multiply the cross products

When applying the distributive property, what should you be careful about?

• Ignoring the constants

• Dividing terms prematurely

• Adding terms incorrectly

• Forgetting to multiply each term

What is the result of multiplying 3 by 13 in the given equation?

• 65

• 52

• 39

• 26

How do you isolate the variable in the equation?

• Divide both sides by the coefficient of the variable

• Subtract the variable from both sides

• Multiply both sides by the variable

• Add the variable to both sides

What is the final value of the variable in the solved equation?

• -3

• 3

• 0

• 13