Answers

Add 75/54 and 42/80

1^st number: 1 21/54, 2^nd number: 42/80

75/54 + 42/80 is 689/360.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 80 is 2160
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2160
2. For the 1st fraction, since 54 × 40 = 2160,
   75/54 = 75 × 40/54 × 40 = 3000/2160
3. Likewise, for the 2nd fraction, since 80 × 27 = 2160,
   42/80 = 42 × 27/80 × 27 = 1134/2160
4. Add the two like fractions:
   3000/2160 + 1134/2160 = 3000 + 1134/2160 = 4134/2160
5. 4134/2160 simplified gives 689/360
6. So, 75/54 + 42/80 = 689/360
   In mixed form: 1329/360

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