Answers

Subtract 7/80 from 42/25

1^st number: 1 17/25, 2^nd number: 7/80

42/25 - 7/80 is 637/400.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 25 and 80 is 400
   
   Next, find the equivalent fraction of both fractional numbers with denominator 400
2. For the 1st fraction, since 25 × 16 = 400,
   42/25 = 42 × 16/25 × 16 = 672/400
3. Likewise, for the 2nd fraction, since 80 × 5 = 400,
   7/80 = 7 × 5/80 × 5 = 35/400
4. Subtract the two like fractions:
   672/400 - 35/400 = 672 - 35/400 = 637/400
5. In mixed form: 1237/400

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