Solutions by everydaycalculation.com

645 is greater than 230

- Find the least common denominator or LCM of the two denominators:

LCM of 45 and 30 is**90**

Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,

645 = 6 × 245 × 2 = 1290 - Likewise, for the 2nd fraction, since 30 × 3 = 90,

230 = 2 × 330 × 3 = 690 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 1290 > 690 or 645 > 230

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