Answers

Subtract 70/3 from 42/90

1^st number: 42/90, 2^nd number: 23 1/3

42/90 - 70/3 is -343/15.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 3 is 90
   
   Next, find the equivalent fraction of both fractional numbers with denominator 90
2. For the 1st fraction, since 90 × 1 = 90,
   42/90 = 42 × 1/90 × 1 = 42/90
3. Likewise, for the 2nd fraction, since 3 × 30 = 90,
   70/3 = 70 × 30/3 × 30 = 2100/90
4. Subtract the two like fractions:
   42/90 - 2100/90 = 42 - 2100/90 = -2058/90
5. After reducing the fraction, the answer is -343/15

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