Answers

Add 3/21 and 56/90

3/21 + 56/90 is 241/315.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 90 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 21 × 30 = 630,
   3/21 = 3 × 30/21 × 30 = 90/630
3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
   56/90 = 56 × 7/90 × 7 = 392/630
4. Add the two like fractions:
   90/630 + 392/630 = 90 + 392/630 = 482/630
5. 482/630 simplified gives 241/315
6. So, 3/21 + 56/90 = 241/315

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