How do you solve proportions

The video tutorial explains two methods for solving proportions: using the Least Common Multiple (LCM) and cross multiplication. The LCM method involves finding the smallest multiple that both denominators divide into, then multiplying both sides of the equation by this number. Cross multiplication is often simpler, involving multiplying the cross products of the fractions. Both methods require simplification, combining like terms, and solving the resulting equation. The tutorial emphasizes understanding both methods to choose the most effective one for different problems.

Which method is often considered simpler for solving proportions?

• Using the Least Common Multiple (LCM)

• Using the Least Common Denominator (LCD)

• Cross multiplication

• None of the above

What is the first step in solving a proportion using the LCM or LCD method?

• Cross multiply the fractions

• Add the numerators

• Identify the smallest multiple both denominators divide into

• Subtract the denominators

When using the LCM or LCD method, what must you do after multiplying both sides by the LCM or LCD?

• Simplify the equation by combining like terms

• Add the LCM or LCD to both sides

• Subtract the LCM or LCD from both sides

• Divide both sides by the LCM or LCD

In cross multiplication, what should you do after multiplying the cross products?

• Subtract the cross products

• Divide the cross products

• Add the cross products

• Apply the distributive property if necessary

What is a key advantage of using cross multiplication for solving proportions?

• It allows for solving without simplifying

• It involves adding the fractions

• It requires finding the LCM or LCD

• It can be done with the brain on autopilot