Answers

Add 54/15 and 70/80

1^st number: 3 9/15, 2^nd number: 70/80

54/15 + 70/80 is 179/40.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 80 is 240
   
   Next, find the equivalent fraction of both fractional numbers with denominator 240
2. For the 1st fraction, since 15 × 16 = 240,
   54/15 = 54 × 16/15 × 16 = 864/240
3. Likewise, for the 2nd fraction, since 80 × 3 = 240,
   70/80 = 70 × 3/80 × 3 = 210/240
4. Add the two like fractions:
   864/240 + 210/240 = 864 + 210/240 = 1074/240
5. 1074/240 simplified gives 179/40
6. So, 54/15 + 70/80 = 179/40
   In mixed form: 419/40

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