Answers

Subtract 80/7 from 70/9

1^st number: 7 7/9, 2^nd number: 11 3/7

70/9 - 80/7 is -230/63.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 9 and 7 is 63
   
   Next, find the equivalent fraction of both fractional numbers with denominator 63
2. For the 1st fraction, since 9 × 7 = 63,
   70/9 = 70 × 7/9 × 7 = 490/63
3. Likewise, for the 2nd fraction, since 7 × 9 = 63,
   80/7 = 80 × 9/7 × 9 = 720/63
4. Subtract the two like fractions:
   490/63 - 720/63 = 490 - 720/63 = -230/63

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