Answers

Subtract 90/72 from 90/30

1^st number: 3 0/30, 2^nd number: 1 18/72

90/30 - 90/72 is 7/4.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 72 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 30 × 12 = 360,
   90/30 = 90 × 12/30 × 12 = 1080/360
3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
   90/72 = 90 × 5/72 × 5 = 450/360
4. Subtract the two like fractions:
   1080/360 - 450/360 = 1080 - 450/360 = 630/360
5. After reducing the fraction, the answer is 7/4
6. In mixed form: 13/4

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