Answers

Subtract 90/70 from 54/48

1^st number: 1 6/48, 2^nd number: 1 20/70

54/48 - 90/70 is -9/56.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 48 and 70 is 1680
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1680
2. For the 1st fraction, since 48 × 35 = 1680,
   54/48 = 54 × 35/48 × 35 = 1890/1680
3. Likewise, for the 2nd fraction, since 70 × 24 = 1680,
   90/70 = 90 × 24/70 × 24 = 2160/1680
4. Subtract the two like fractions:
   1890/1680 - 2160/1680 = 1890 - 2160/1680 = -270/1680
5. After reducing the fraction, the answer is -9/56

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