Answers

Subtract 40/35 from 80/90

1^st number: 80/90, 2^nd number: 1 5/35

80/90 - 40/35 is -16/63.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 35 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 90 × 7 = 630,
   80/90 = 80 × 7/90 × 7 = 560/630
3. Likewise, for the 2nd fraction, since 35 × 18 = 630,
   40/35 = 40 × 18/35 × 18 = 720/630
4. Subtract the two like fractions:
   560/630 - 720/630 = 560 - 720/630 = -160/630
5. After reducing the fraction, the answer is -16/63

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