Answers

Subtract 45/90 from 72/7

1^st number: 10 2/7, 2^nd number: 45/90

72/7 - 45/90 is 137/14.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 7 and 90 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 7 × 90 = 630,
   72/7 = 72 × 90/7 × 90 = 6480/630
3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
   45/90 = 45 × 7/90 × 7 = 315/630
4. Subtract the two like fractions:
   6480/630 - 315/630 = 6480 - 315/630 = 6165/630
5. After reducing the fraction, the answer is 137/14
6. In mixed form: 911/14

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