Answers

Add 20/63 and 72/70

1^st number: 20/63, 2^nd number: 1 2/70

20/63 + 72/70 is 424/315.

Steps for adding 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,
   20/63 = 20 × 10/63 × 10 = 200/630
3. Likewise, for the 2nd fraction, since 70 × 9 = 630,
   72/70 = 72 × 9/70 × 9 = 648/630
4. Add the two like fractions:
   200/630 + 648/630 = 200 + 648/630 = 848/630
5. 848/630 simplified gives 424/315
6. So, 20/63 + 72/70 = 424/315
   In mixed form: 1109/315

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