Answers

Subtract 60/12 from 90/45

1^st number: 2 0/45, 2^nd number: 5 0/12

90/45 - 60/12 is -3/1.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 12 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 45 × 4 = 180,
   90/45 = 90 × 4/45 × 4 = 360/180
3. Likewise, for the 2nd fraction, since 12 × 15 = 180,
   60/12 = 60 × 15/12 × 15 = 900/180
4. Subtract the two like fractions:
   360/180 - 900/180 = 360 - 900/180 = -540/180
5. After reducing the fraction, the answer is -3/1

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