Answers

Subtract 70/30 from 90/7

1^st number: 12 6/7, 2^nd number: 2 10/30

90/7 - 70/30 is 221/21.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 7 and 30 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 7 × 30 = 210,
   90/7 = 90 × 30/7 × 30 = 2700/210
3. Likewise, for the 2nd fraction, since 30 × 7 = 210,
   70/30 = 70 × 7/30 × 7 = 490/210
4. Subtract the two like fractions:
   2700/210 - 490/210 = 2700 - 490/210 = 2210/210
5. After reducing the fraction, the answer is 221/21
6. In mixed form: 1011/21

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