When comparing or simplifying fractions.
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Cross multiplication is when you multiply the denominator of a fraction by the numerator of another fraction. Before you cross multiply you want to see if you can simply the fractions.
yes...to know if it is equal use cross multiplication..if the answer is the same as the product of the denominetor to the numerator,it is equal
How do you use division to solve a multiplication equation?Answer this question…
j = 11. cross multiplication
in school, i used multiplication in my planner,a print out or a calculator to help me know it