Answers

Subtract 84/16 from 20/70

1^st number: 20/70, 2^nd number: 5 4/16

20/70 - 84/16 is -139/28.

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,
   20/70 = 20 × 8/70 × 8 = 160/560
3. Likewise, for the 2nd fraction, since 16 × 35 = 560,
   84/16 = 84 × 35/16 × 35 = 2940/560
4. Subtract the two like fractions:
   160/560 - 2940/560 = 160 - 2940/560 = -2780/560
5. After reducing the fraction, the answer is -139/28

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