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If you need to simplify a rational expression with two or more terms, you need to find the LCD in order to write the expression as a single fraction. If the denominators have not common factors, then the only way is to multiply each numerator with the all denominators of the other terms.
If you have an equation in the proportion form, then cross multiply.
If both sides of the equation have more than two rational terms, then work at both sides until you have a proportion, then cross multiply. But I would prefer to multiply each term at both sides by the LCD in order to eliminate the denominators.
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When can cross multiply be used as a shortcut to the solution while solving rational expressions?
in division
How will you find the value of the unknown in a given rational equation?
Try to cross multiply if possible or set the denominators equal to each other Cross multiplying is when a/b = c/d Which is equal to ad = bc
Do you cross multiply with fractions?
yes
Multiplying each numerator in the original rational equation by the denominator from the opposite side of the rational equation is known as?
cross-multiplying
What is it called when you multiply the numerator of one fraction by the the denominator of another?
cross multiply
