Answers

Subtract 70/60 from 90/84

1^st number: 1 6/84, 2^nd number: 1 10/60

90/84 - 70/60 is -2/21.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 60 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 84 × 5 = 420,
   90/84 = 90 × 5/84 × 5 = 450/420
3. Likewise, for the 2nd fraction, since 60 × 7 = 420,
   70/60 = 70 × 7/60 × 7 = 490/420
4. Subtract the two like fractions:
   450/420 - 490/420 = 450 - 490/420 = -40/420
5. After reducing the fraction, the answer is -2/21

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