Answers

Add 27/90 and 20/63

27/90 + 20/63 is 389/630.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 63 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 90 × 7 = 630,
   27/90 = 27 × 7/90 × 7 = 189/630
3. Likewise, for the 2nd fraction, since 63 × 10 = 630,
   20/63 = 20 × 10/63 × 10 = 200/630
4. Add the two like fractions:
   189/630 + 200/630 = 189 + 200/630 = 389/630
5. So, 27/90 + 20/63 = 389/630

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