Answers

Subtract 42/80 from 70/18

1^st number: 3 16/18, 2^nd number: 42/80

70/18 - 42/80 is 1211/360.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 80 is 720
   
   Next, find the equivalent fraction of both fractional numbers with denominator 720
2. For the 1st fraction, since 18 × 40 = 720,
   70/18 = 70 × 40/18 × 40 = 2800/720
3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
   42/80 = 42 × 9/80 × 9 = 378/720
4. Subtract the two like fractions:
   2800/720 - 378/720 = 2800 - 378/720 = 2422/720
5. After reducing the fraction, the answer is 1211/360
6. In mixed form: 3131/360

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