Answers

Subtract 72/32 from 90/20

1^st number: 4 10/20, 2^nd number: 2 8/32

90/20 - 72/32 is 9/4.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 32 is 160
   
   Next, find the equivalent fraction of both fractional numbers with denominator 160
2. For the 1st fraction, since 20 × 8 = 160,
   90/20 = 90 × 8/20 × 8 = 720/160
3. Likewise, for the 2nd fraction, since 32 × 5 = 160,
   72/32 = 72 × 5/32 × 5 = 360/160
4. Subtract the two like fractions:
   720/160 - 360/160 = 720 - 360/160 = 360/160
5. After reducing the fraction, the answer is 9/4
6. In mixed form: 21/4

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