Solutions by everydaycalculation.com

670 is smaller than 2190

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

LCM of 70 and 90 is**630**

Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,

670 = 6 × 970 × 9 = 54630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,

2190 = 21 × 790 × 7 = 147630 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 54630 < 147630 or 670 < 2190

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