Answers

Subtract 7/80 from 28/54

28/54 - 7/80 is 931/2160.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 80 is 2160
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2160
2. For the 1st fraction, since 54 × 40 = 2160,
   28/54 = 28 × 40/54 × 40 = 1120/2160
3. Likewise, for the 2nd fraction, since 80 × 27 = 2160,
   7/80 = 7 × 27/80 × 27 = 189/2160
4. Subtract the two like fractions:
   1120/2160 - 189/2160 = 1120 - 189/2160 = 931/2160

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