Answers

Subtract 28/54 from 1/70

1/70 - 28/54 is -953/1890.

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,
   1/70 = 1 × 27/70 × 27 = 27/1890
3. Likewise, for the 2nd fraction, since 54 × 35 = 1890,
   28/54 = 28 × 35/54 × 35 = 980/1890
4. Subtract the two like fractions:
   27/1890 - 980/1890 = 27 - 980/1890 = -953/1890

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