Answers

Compare 7/90 and 21/45

7/90 is smaller than 21/45

Steps for comparing fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 45 is 90
   
   Next, find the equivalent fraction of both fractional numbers with denominator 90
2. For the 1st fraction, since 90 × 1 = 90,
   7/90 = 7 × 1/90 × 1 = 7/90
3. Likewise, for the 2nd fraction, since 45 × 2 = 90,
   21/45 = 21 × 2/45 × 2 = 42/90
4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
5. 7/90 < 42/90 or 7/90 < 21/45

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