Answers

Subtract 15/30 from 90/70

1^st number: 1 20/70, 2^nd number: 15/30

90/70 - 15/30 is 11/14.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 30 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 70 × 3 = 210,
   90/70 = 90 × 3/70 × 3 = 270/210
3. Likewise, for the 2nd fraction, since 30 × 7 = 210,
   15/30 = 15 × 7/30 × 7 = 105/210
4. Subtract the two like fractions:
   270/210 - 105/210 = 270 - 105/210 = 165/210
5. After reducing the fraction, the answer is 11/14

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