Answers

Add 30/63 and 12/90

30/63 + 12/90 is 64/105.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 90 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 63 × 10 = 630,
   30/63 = 30 × 10/63 × 10 = 300/630
3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
   12/90 = 12 × 7/90 × 7 = 84/630
4. Add the two like fractions:
   300/630 + 84/630 = 300 + 84/630 = 384/630
5. 384/630 simplified gives 64/105
6. So, 30/63 + 12/90 = 64/105

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