Answers

Add 42/20 and 45/72

1^st number: 2 2/20, 2^nd number: 45/72

42/20 + 45/72 is 109/40.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 72 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 20 × 18 = 360,
   42/20 = 42 × 18/20 × 18 = 756/360
3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
   45/72 = 45 × 5/72 × 5 = 225/360
4. Add the two like fractions:
   756/360 + 225/360 = 756 + 225/360 = 981/360
5. 981/360 simplified gives 109/40
6. So, 42/20 + 45/72 = 109/40
   In mixed form: 229/40

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