Answers

Subtract 42/14 from 49/90

1^st number: 49/90, 2^nd number: 3 0/14

49/90 - 42/14 is -221/90.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 14 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 90 × 7 = 630,
   49/90 = 49 × 7/90 × 7 = 343/630
3. Likewise, for the 2nd fraction, since 14 × 45 = 630,
   42/14 = 42 × 45/14 × 45 = 1890/630
4. Subtract the two like fractions:
   343/630 - 1890/630 = 343 - 1890/630 = -1547/630
5. After reducing the fraction, the answer is -221/90

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