Answers

Subtract 40/18 from 90/49

1^st number: 1 41/49, 2^nd number: 2 4/18

90/49 - 40/18 is -170/441.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 49 and 18 is 882
   
   Next, find the equivalent fraction of both fractional numbers with denominator 882
2. For the 1st fraction, since 49 × 18 = 882,
   90/49 = 90 × 18/49 × 18 = 1620/882
3. Likewise, for the 2nd fraction, since 18 × 49 = 882,
   40/18 = 40 × 49/18 × 49 = 1960/882
4. Subtract the two like fractions:
   1620/882 - 1960/882 = 1620 - 1960/882 = -340/882
5. After reducing the fraction, the answer is -170/441

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