Algebra 2 - How do you solve proportions two methods 5/b = 3/9

The video tutorial explains how to solve proportions using different methods, including inverse operations and cross multiplication. It covers techniques to remove variables from the denominator, the use of reciprocals, and the application of cross multiplication to solve equations. The tutorial emphasizes understanding the logic behind each method to effectively solve proportions.

What is the first step in solving a proportion when the variable is in the denominator?

• Multiply by the reciprocal of the variable

• Add the variable to both sides

• Divide by the variable

• Subtract the variable from both sides

When using inverse operations, what is the result of multiplying a number by its reciprocal?

• The original number

• One

• The reciprocal

• Zero

What is the main advantage of using cross multiplication to solve proportions?

• It allows for solving multiple equations simultaneously

• It provides an exact solution without calculations

• It simplifies the process by avoiding fractions

• It eliminates the need for division

Cross multiplication is applicable when:

• Multiplying any two numbers

• Solving equations with variables on both sides

• Dealing with ratios equal to another ratio

• Working with simple addition problems

Which method is often remembered by students for solving proportions?

• Inverse operations

• Cross multiplication

• Substitution

• Graphical method