How to use elimination to solve a word problem

The video tutorial explains how to solve a word problem involving the number of countries where English and Farsi are spoken as the first language. It guides through defining variables, setting up equations, and using the elimination method to find the solution. The problem states that English is spoken in 78 more countries than Farsi, and together they are spoken in 130 countries. The solution involves defining variables for the number of countries, setting up equations, and solving them to find that English is spoken in 104 countries and Farsi in 26.

In how many countries is English spoken as the first language?

Evaluate responses using AI:

OFF

How can you represent the number of people who speak English and Farsi as first languages?

Evaluate responses using AI:

OFF

What operation is suggested by the word 'together' in the context of the problem?

Evaluate responses using AI:

OFF

How do you derive the equation relating the number of English and Farsi speakers?

Evaluate responses using AI:

OFF

What does the term '78 more countries' imply in the context of English and Farsi?

Evaluate responses using AI:

OFF

What is the significance of the elimination method in solving the problem?

Evaluate responses using AI:

OFF

After solving the equations, what is the number of countries that speak Farsi?

Evaluate responses using AI:

OFF