Answers

Add 7/21 and 70/45

1^st number: 7/21, 2^nd number: 1 25/45

7/21 + 70/45 is 17/9.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 45 is 315
   
   Next, find the equivalent fraction of both fractional numbers with denominator 315
2. For the 1st fraction, since 21 × 15 = 315,
   7/21 = 7 × 15/21 × 15 = 105/315
3. Likewise, for the 2nd fraction, since 45 × 7 = 315,
   70/45 = 70 × 7/45 × 7 = 490/315
4. Add the two like fractions:
   105/315 + 490/315 = 105 + 490/315 = 595/315
5. 595/315 simplified gives 17/9
6. So, 7/21 + 70/45 = 17/9
   In mixed form: 18/9

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