Answers

Subtract 10/84 from 90/40

1^st number: 2 10/40, 2^nd number: 10/84

90/40 - 10/84 is 179/84.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 84 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 40 × 21 = 840,
   90/40 = 90 × 21/40 × 21 = 1890/840
3. Likewise, for the 2nd fraction, since 84 × 10 = 840,
   10/84 = 10 × 10/84 × 10 = 100/840
4. Subtract the two like fractions:
   1890/840 - 100/840 = 1890 - 100/840 = 1790/840
5. After reducing the fraction, the answer is 179/84
6. In mixed form: 211/84

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