Answers

Add 70/72 and 42/20

1^st number: 70/72, 2^nd number: 2 2/20

70/72 + 42/20 is 553/180.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 20 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 72 × 5 = 360,
   70/72 = 70 × 5/72 × 5 = 350/360
3. Likewise, for the 2nd fraction, since 20 × 18 = 360,
   42/20 = 42 × 18/20 × 18 = 756/360
4. Add the two like fractions:
   350/360 + 756/360 = 350 + 756/360 = 1106/360
5. 1106/360 simplified gives 553/180
6. So, 70/72 + 42/20 = 553/180
   In mixed form: 313/180

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