Answers

Add 27/40 and 98/70

1^st number: 27/40, 2^nd number: 1 28/70

27/40 + 98/70 is 83/40.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 70 is 280
   
   Next, find the equivalent fraction of both fractional numbers with denominator 280
2. For the 1st fraction, since 40 × 7 = 280,
   27/40 = 27 × 7/40 × 7 = 189/280
3. Likewise, for the 2nd fraction, since 70 × 4 = 280,
   98/70 = 98 × 4/70 × 4 = 392/280
4. Add the two like fractions:
   189/280 + 392/280 = 189 + 392/280 = 581/280
5. 581/280 simplified gives 83/40
6. So, 27/40 + 98/70 = 83/40
   In mixed form: 23/40

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