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Manipulating algebra fraction

Teaching Transcript

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If 9 is equal to something over 3, what is that something?

If we multiply both sides of the equals sign by 3, we can make the equation simpler. Our mystery number is equal to 9 times 3

9 times 3 is 27, so our mystery number is 27.

This skill teaches how to solve for an unknown in a proportion by multiplying both sides of the equation by the denominator. This simplifies the equation to find the numerator directly.

Skill Practice

Manipulating a fraction in algebra orientation 2

Test your understanding of manipulating algebra fraction by practicing it! Work through the below exercises to use it in practice.