Answers

Add 20/60 and 42/72

20/60 + 42/72 is 11/12.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 60 and 72 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 60 × 6 = 360,
   20/60 = 20 × 6/60 × 6 = 120/360
3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
   42/72 = 42 × 5/72 × 5 = 210/360
4. Add the two like fractions:
   120/360 + 210/360 = 120 + 210/360 = 330/360
5. 330/360 simplified gives 11/12
6. So, 20/60 + 42/72 = 11/12

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