Answers

Subtract 12/70 from 80/63

1^st number: 1 17/63, 2^nd number: 12/70

80/63 - 12/70 is 346/315.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 70 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 63 × 10 = 630,
   80/63 = 80 × 10/63 × 10 = 800/630
3. Likewise, for the 2nd fraction, since 70 × 9 = 630,
   12/70 = 12 × 9/70 × 9 = 108/630
4. Subtract the two like fractions:
   800/630 - 108/630 = 800 - 108/630 = 692/630
5. After reducing the fraction, the answer is 346/315
6. In mixed form: 131/315

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