Answers

Subtract 18/80 from 90/50

1^st number: 1 40/50, 2^nd number: 18/80

90/50 - 18/80 is 63/40.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 50 and 80 is 400
   
   Next, find the equivalent fraction of both fractional numbers with denominator 400
2. For the 1st fraction, since 50 × 8 = 400,
   90/50 = 90 × 8/50 × 8 = 720/400
3. Likewise, for the 2nd fraction, since 80 × 5 = 400,
   18/80 = 18 × 5/80 × 5 = 90/400
4. Subtract the two like fractions:
   720/400 - 90/400 = 720 - 90/400 = 630/400
5. After reducing the fraction, the answer is 63/40
6. In mixed form: 123/40

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