Answers

Add 20/63 and 10/45

20/63 + 10/45 is 34/63.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 45 is 315
   
   Next, find the equivalent fraction of both fractional numbers with denominator 315
2. For the 1st fraction, since 63 × 5 = 315,
   20/63 = 20 × 5/63 × 5 = 100/315
3. Likewise, for the 2nd fraction, since 45 × 7 = 315,
   10/45 = 10 × 7/45 × 7 = 70/315
4. Add the two like fractions:
   100/315 + 70/315 = 100 + 70/315 = 170/315
5. 170/315 simplified gives 34/63
6. So, 20/63 + 10/45 = 34/63

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