Answers

Add 12/35 and 54/60

12/35 + 54/60 is 87/70.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 35 and 60 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 35 × 12 = 420,
   12/35 = 12 × 12/35 × 12 = 144/420
3. Likewise, for the 2nd fraction, since 60 × 7 = 420,
   54/60 = 54 × 7/60 × 7 = 378/420
4. Add the two like fractions:
   144/420 + 378/420 = 144 + 378/420 = 522/420
5. 522/420 simplified gives 87/70
6. So, 12/35 + 54/60 = 87/70
   In mixed form: 117/70

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