Answers

Subtract 6/90 from 90/20

1^st number: 4 10/20, 2^nd number: 6/90

90/20 - 6/90 is 133/30.

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,
   90/20 = 90 × 9/20 × 9 = 810/180
3. Likewise, for the 2nd fraction, since 90 × 2 = 180,
   6/90 = 6 × 2/90 × 2 = 12/180
4. Subtract the two like fractions:
   810/180 - 12/180 = 810 - 12/180 = 798/180
5. After reducing the fraction, the answer is 133/30
6. In mixed form: 413/30

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