Answers

Subtract 40/30 from 15/70

1^st number: 15/70, 2^nd number: 1 10/30

15/70 - 40/30 is -47/42.

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,
   15/70 = 15 × 3/70 × 3 = 45/210
3. Likewise, for the 2nd fraction, since 30 × 7 = 210,
   40/30 = 40 × 7/30 × 7 = 280/210
4. Subtract the two like fractions:
   45/210 - 280/210 = 45 - 280/210 = -235/210
5. After reducing the fraction, the answer is -47/42

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