Answers

Subtract 98/70 from 70/80

1^st number: 70/80, 2^nd number: 1 28/70

70/80 - 98/70 is -21/40.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 70 is 560
   
   Next, find the equivalent fraction of both fractional numbers with denominator 560
2. For the 1st fraction, since 80 × 7 = 560,
   70/80 = 70 × 7/80 × 7 = 490/560
3. Likewise, for the 2nd fraction, since 70 × 8 = 560,
   98/70 = 98 × 8/70 × 8 = 784/560
4. Subtract the two like fractions:
   490/560 - 784/560 = 490 - 784/560 = -294/560
5. After reducing the fraction, the answer is -21/40

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