There are places where this term is used.
1st- to compare fractions across an equals you are multiplying each side by the product of the denominators. It looks like you multiply the numerator of the left side times the denominator of the right and put that product on the left side.
Multiply the numerator of the left times the denominator of the right and put that on the right. In algebra this is good when looking for an unknown.
2nd- when comparing fractions to see which one is bigger you can multiply up from the denominator to the other numerator and compare these numbers to see which one is bigger.
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definition of multiplying fractions?
Multiply straight across and cross reduce when necessary
Fractions and decimals are usually rational numbers. Besides, multiplying rational and irrational numbers is also similar.
no you do not
No.