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What the error? Jonah says a common denominator for 3/4 and 2/5 is 9 what is Jonah error?explain

Respuesta :

Answer:

should be 20

Step-by-step explanation:

yes

oOTheBigCheeseOo

Answer: She had added the Denominator, instead of finding the LCM.

Explanation: She should've multiplied them by a common number to equal a common Product, and replace the Denominator with the Product. (The correct denominator is 20, because 4 x 5 = 20, and 5 x 4= 20)

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