Answers

Add 2/90 and 7/63

2/90 + 7/63 is 2/15.

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,
   2/90 = 2 × 7/90 × 7 = 14/630
3. Likewise, for the 2nd fraction, since 63 × 10 = 630,
   7/63 = 7 × 10/63 × 10 = 70/630
4. Add the two like fractions:
   14/630 + 70/630 = 14 + 70/630 = 84/630
5. 84/630 simplified gives 2/15
6. So, 2/90 + 7/63 = 2/15

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