Answers

Subtract 25/18 from 90/7

1^st number: 12 6/7, 2^nd number: 1 7/18

90/7 - 25/18 is 1445/126.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 7 and 18 is 126
   
   Next, find the equivalent fraction of both fractional numbers with denominator 126
2. For the 1st fraction, since 7 × 18 = 126,
   90/7 = 90 × 18/7 × 18 = 1620/126
3. Likewise, for the 2nd fraction, since 18 × 7 = 126,
   25/18 = 25 × 7/18 × 7 = 175/126
4. Subtract the two like fractions:
   1620/126 - 175/126 = 1620 - 175/126 = 1445/126
5. In mixed form: 1159/126

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