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What is cross multiplication helpful is?
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What is cross multiplication helpful is?

User Ronald Conco
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In mathematics, specifically in elementary arithmetic and elementary algebra, given an equation between two fractions or rational expressions, one can cross-multiply to simplify the equation or determine the value of a variable.
User Abhishek Prusty
by
7.3k points
5 votes
Cross Multiplication is helpful for when you are using fractions.

Example:
1 4
— x — = ?????
2 2

Sooooo, you must multiply 1 by 2 to get 2. Then, multiply 4 by to 2, to equal 8.
User Zoon Nooz
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7.7k points
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