Answers

Add 20/7 and 54/80

1^st number: 2 6/7, 2^nd number: 54/80

20/7 + 54/80 is 989/280.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 7 and 80 is 560
   
   Next, find the equivalent fraction of both fractional numbers with denominator 560
2. For the 1st fraction, since 7 × 80 = 560,
   20/7 = 20 × 80/7 × 80 = 1600/560
3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
   54/80 = 54 × 7/80 × 7 = 378/560
4. Add the two like fractions:
   1600/560 + 378/560 = 1600 + 378/560 = 1978/560
5. 1978/560 simplified gives 989/280
6. So, 20/7 + 54/80 = 989/280
   In mixed form: 3149/280

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