Answers

Subtract 36/16 from 90/70

1^st number: 1 20/70, 2^nd number: 2 4/16

90/70 - 36/16 is -27/28.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 16 is 560
   
   Next, find the equivalent fraction of both fractional numbers with denominator 560
2. For the 1st fraction, since 70 × 8 = 560,
   90/70 = 90 × 8/70 × 8 = 720/560
3. Likewise, for the 2nd fraction, since 16 × 35 = 560,
   36/16 = 36 × 35/16 × 35 = 1260/560
4. Subtract the two like fractions:
   720/560 - 1260/560 = 720 - 1260/560 = -540/560
5. After reducing the fraction, the answer is -27/28

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