Answers

Add 20/63 and 16/45

20/63 + 16/45 is 212/315.

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,
   16/45 = 16 × 7/45 × 7 = 112/315
4. Add the two like fractions:
   100/315 + 112/315 = 100 + 112/315 = 212/315
5. So, 20/63 + 16/45 = 212/315

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