Answers

Subtract 5/54 from 90/70

1^st number: 1 20/70, 2^nd number: 5/54

90/70 - 5/54 is 451/378.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 54 is 1890
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1890
2. For the 1st fraction, since 70 × 27 = 1890,
   90/70 = 90 × 27/70 × 27 = 2430/1890
3. Likewise, for the 2nd fraction, since 54 × 35 = 1890,
   5/54 = 5 × 35/54 × 35 = 175/1890
4. Subtract the two like fractions:
   2430/1890 - 175/1890 = 2430 - 175/1890 = 2255/1890
5. After reducing the fraction, the answer is 451/378
6. In mixed form: 173/378

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