Answers

Subtract 42/80 from 90/49

1^st number: 1 41/49, 2^nd number: 42/80

90/49 - 42/80 is 2571/1960.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 49 and 80 is 3920
   
   Next, find the equivalent fraction of both fractional numbers with denominator 3920
2. For the 1st fraction, since 49 × 80 = 3920,
   90/49 = 90 × 80/49 × 80 = 7200/3920
3. Likewise, for the 2nd fraction, since 80 × 49 = 3920,
   42/80 = 42 × 49/80 × 49 = 2058/3920
4. Subtract the two like fractions:
   7200/3920 - 2058/3920 = 7200 - 2058/3920 = 5142/3920
5. After reducing the fraction, the answer is 2571/1960
6. In mixed form: 1611/1960

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