Answers

Add 70/45 and 42/63

1^st number: 1 25/45, 2^nd number: 42/63

70/45 + 42/63 is 20/9.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 63 is 315
   
   Next, find the equivalent fraction of both fractional numbers with denominator 315
2. For the 1st fraction, since 45 × 7 = 315,
   70/45 = 70 × 7/45 × 7 = 490/315
3. Likewise, for the 2nd fraction, since 63 × 5 = 315,
   42/63 = 42 × 5/63 × 5 = 210/315
4. Add the two like fractions:
   490/315 + 210/315 = 490 + 210/315 = 700/315
5. 700/315 simplified gives 20/9
6. So, 70/45 + 42/63 = 20/9
   In mixed form: 22/9

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