Answers

Subtract 48/90 from 9/20

9/20 - 48/90 is -1/12.

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,
   9/20 = 9 × 9/20 × 9 = 81/180
3. Likewise, for the 2nd fraction, since 90 × 2 = 180,
   48/90 = 48 × 2/90 × 2 = 96/180
4. Subtract the two like fractions:
   81/180 - 96/180 = 81 - 96/180 = -15/180
5. After reducing the fraction, the answer is -1/12

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