Answers

Subtract 30/72 from 90/45

1^st number: 2 0/45, 2^nd number: 30/72

90/45 - 30/72 is 19/12.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 72 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 45 × 8 = 360,
   90/45 = 90 × 8/45 × 8 = 720/360
3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
   30/72 = 30 × 5/72 × 5 = 150/360
4. Subtract the two like fractions:
   720/360 - 150/360 = 720 - 150/360 = 570/360
5. After reducing the fraction, the answer is 19/12
6. In mixed form: 17/12

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