Answers

Add 1/70 and 81/80

1^st number: 1/70, 2^nd number: 1 1/80

1/70 + 81/80 is 115/112.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 80 is 560
   
   Next, find the equivalent fraction of both fractional numbers with denominator 560
2. For the 1st fraction, since 70 × 8 = 560,
   1/70 = 1 × 8/70 × 8 = 8/560
3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
   81/80 = 81 × 7/80 × 7 = 567/560
4. Add the two like fractions:
   8/560 + 567/560 = 8 + 567/560 = 575/560
5. 575/560 simplified gives 115/112
6. So, 1/70 + 81/80 = 115/112
   In mixed form: 13/112

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