Answers

Add 20/45 and 42/35

1^st number: 20/45, 2^nd number: 1 7/35

20/45 + 42/35 is 74/45.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 35 is 315
   
   Next, find the equivalent fraction of both fractional numbers with denominator 315
2. For the 1st fraction, since 45 × 7 = 315,
   20/45 = 20 × 7/45 × 7 = 140/315
3. Likewise, for the 2nd fraction, since 35 × 9 = 315,
   42/35 = 42 × 9/35 × 9 = 378/315
4. Add the two like fractions:
   140/315 + 378/315 = 140 + 378/315 = 518/315
5. 518/315 simplified gives 74/45
6. So, 20/45 + 42/35 = 74/45
   In mixed form: 129/45

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