Answers

Subtract 42/10 from 90/36

1^st number: 2 18/36, 2^nd number: 4 2/10

90/36 - 42/10 is -17/10.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 36 and 10 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 36 × 5 = 180,
   90/36 = 90 × 5/36 × 5 = 450/180
3. Likewise, for the 2nd fraction, since 10 × 18 = 180,
   42/10 = 42 × 18/10 × 18 = 756/180
4. Subtract the two like fractions:
   450/180 - 756/180 = 450 - 756/180 = -306/180
5. After reducing the fraction, the answer is -17/10

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