Answers

Subtract 96/90 from 42/84

1^st number: 42/84, 2^nd number: 1 6/90

42/84 - 96/90 is -17/30.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 90 is 1260
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1260
2. For the 1st fraction, since 84 × 15 = 1260,
   42/84 = 42 × 15/84 × 15 = 630/1260
3. Likewise, for the 2nd fraction, since 90 × 14 = 1260,
   96/90 = 96 × 14/90 × 14 = 1344/1260
4. Subtract the two like fractions:
   630/1260 - 1344/1260 = 630 - 1344/1260 = -714/1260
5. After reducing the fraction, the answer is -17/30

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