Answers

Add 28/63 and 12/70

28/63 + 12/70 is 194/315.

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,
   28/63 = 28 × 10/63 × 10 = 280/630
3. Likewise, for the 2nd fraction, since 70 × 9 = 630,
   12/70 = 12 × 9/70 × 9 = 108/630
4. Add the two like fractions:
   280/630 + 108/630 = 280 + 108/630 = 388/630
5. 388/630 simplified gives 194/315
6. So, 28/63 + 12/70 = 194/315

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