Answers

Subtract 80/50 from 42/80

1^st number: 42/80, 2^nd number: 1 30/50

42/80 - 80/50 is -43/40.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 50 is 400
   
   Next, find the equivalent fraction of both fractional numbers with denominator 400
2. For the 1st fraction, since 80 × 5 = 400,
   42/80 = 42 × 5/80 × 5 = 210/400
3. Likewise, for the 2nd fraction, since 50 × 8 = 400,
   80/50 = 80 × 8/50 × 8 = 640/400
4. Subtract the two like fractions:
   210/400 - 640/400 = 210 - 640/400 = -430/400
5. After reducing the fraction, the answer is -43/40

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