Answers

Subtract 15/90 from 7/20

7/20 - 15/90 is 11/60.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 90 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 20 × 9 = 180,
   7/20 = 7 × 9/20 × 9 = 63/180
3. Likewise, for the 2nd fraction, since 90 × 2 = 180,
   15/90 = 15 × 2/90 × 2 = 30/180
4. Subtract the two like fractions:
   63/180 - 30/180 = 63 - 30/180 = 33/180
5. After reducing the fraction, the answer is 11/60

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