Answers

Add 70/45 and 72/20

1^st number: 1 25/45, 2^nd number: 3 12/20

70/45 + 72/20 is 232/45.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 20 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 45 × 4 = 180,
   70/45 = 70 × 4/45 × 4 = 280/180
3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
   72/20 = 72 × 9/20 × 9 = 648/180
4. Add the two like fractions:
   280/180 + 648/180 = 280 + 648/180 = 928/180
5. 928/180 simplified gives 232/45
6. So, 70/45 + 72/20 = 232/45
   In mixed form: 57/45

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