Answers

Subtract 42/80 from 70/4

1^st number: 17 2/4, 2^nd number: 42/80

70/4 - 42/80 is 679/40.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 4 and 80 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 4 × 20 = 80,
   70/4 = 70 × 20/4 × 20 = 1400/80
3. Likewise, for the 2nd fraction, since 80 × 1 = 80,
   42/80 = 42 × 1/80 × 1 = 42/80
4. Subtract the two like fractions:
   1400/80 - 42/80 = 1400 - 42/80 = 1358/80
5. After reducing the fraction, the answer is 679/40
6. In mixed form: 1639/40

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