Answers

Subtract 40/7 from 10/90

1^st number: 10/90, 2^nd number: 5 5/7

10/90 - 40/7 is -353/63.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 7 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 90 × 7 = 630,
   10/90 = 10 × 7/90 × 7 = 70/630
3. Likewise, for the 2nd fraction, since 7 × 90 = 630,
   40/7 = 40 × 90/7 × 90 = 3600/630
4. Subtract the two like fractions:
   70/630 - 3600/630 = 70 - 3600/630 = -3530/630
5. After reducing the fraction, the answer is -353/63

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