Answers

Subtract 80/35 from 90/45

1^st number: 2 0/45, 2^nd number: 2 10/35

90/45 - 80/35 is -2/7.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 35 is 315
   
   Next, find the equivalent fraction of both fractional numbers with denominator 315
2. For the 1st fraction, since 45 × 7 = 315,
   90/45 = 90 × 7/45 × 7 = 630/315
3. Likewise, for the 2nd fraction, since 35 × 9 = 315,
   80/35 = 80 × 9/35 × 9 = 720/315
4. Subtract the two like fractions:
   630/315 - 720/315 = 630 - 720/315 = -90/315
5. After reducing the fraction, the answer is -2/7

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