Answers

Subtract 49/70 from 25/54

25/54 - 49/70 is -32/135.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 70 is 1890
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1890
2. For the 1st fraction, since 54 × 35 = 1890,
   25/54 = 25 × 35/54 × 35 = 875/1890
3. Likewise, for the 2nd fraction, since 70 × 27 = 1890,
   49/70 = 49 × 27/70 × 27 = 1323/1890
4. Subtract the two like fractions:
   875/1890 - 1323/1890 = 875 - 1323/1890 = -448/1890
5. After reducing the fraction, the answer is -32/135

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