Answers

Subtract 75/54 from 7/90

1^st number: 7/90, 2^nd number: 1 21/54

7/90 - 75/54 is -59/45.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 54 is 270
   
   Next, find the equivalent fraction of both fractional numbers with denominator 270
2. For the 1st fraction, since 90 × 3 = 270,
   7/90 = 7 × 3/90 × 3 = 21/270
3. Likewise, for the 2nd fraction, since 54 × 5 = 270,
   75/54 = 75 × 5/54 × 5 = 375/270
4. Subtract the two like fractions:
   21/270 - 375/270 = 21 - 375/270 = -354/270
5. After reducing the fraction, the answer is -59/45

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