Compare 80/90 and 5/70
80/90 is greater than 5/70
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
80/90 = 80 × 7/90 × 7 = 560/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
5/70 = 5 × 9/70 × 9 = 45/630 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 560/630 > 45/630 or 80/90 > 5/70
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