Answers

Subtract 70/90 from 42/5

1^st number: 8 2/5, 2^nd number: 70/90

42/5 - 70/90 is 343/45.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 5 and 90 is 90
   
   Next, find the equivalent fraction of both fractional numbers with denominator 90
2. For the 1st fraction, since 5 × 18 = 90,
   42/5 = 42 × 18/5 × 18 = 756/90
3. Likewise, for the 2nd fraction, since 90 × 1 = 90,
   70/90 = 70 × 1/90 × 1 = 70/90
4. Subtract the two like fractions:
   756/90 - 70/90 = 756 - 70/90 = 686/90
5. After reducing the fraction, the answer is 343/45
6. In mixed form: 728/45

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