Answers

Subtract 72/20 from 16/70

1^st number: 16/70, 2^nd number: 3 12/20

16/70 - 72/20 is -118/35.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 20 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 70 × 2 = 140,
   16/70 = 16 × 2/70 × 2 = 32/140
3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
   72/20 = 72 × 7/20 × 7 = 504/140
4. Subtract the two like fractions:
   32/140 - 504/140 = 32 - 504/140 = -472/140
5. After reducing the fraction, the answer is -118/35

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