Question

In: Math

Find the LCM Of 25/7, 15/28, 20/21.

Find the LCM Of 25/7, 15/28, 20/21.

Give detail explanation.

Solutions

Expert Solution

Formula used:

 

LCM of fraction = LCM of numerator/HCF of denominator

 

Calculation:

 

LCM of 7, 28, 21 = 84

 

 25/7 = (25 × 12)/(7 × 12) = 300/84

 

15/28 = (15 × 3)/(28 × 3) = 45/84

 

20/21 = (20 × 4)/(21 × 4) = 80/84

 

Now LCM of (300/84, 45/84, 80/84) = LCM(300,45,80)/84 = 3600/84 = 300/7

LCM= 300/7 answer

Nipun Maity answered 2 years ago
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