Answers

Add 80/40 and 30/70

1^st number: 2 0/40, 2^nd number: 30/70

80/40 + 30/70 is 17/7.

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,
   80/40 = 80 × 7/40 × 7 = 560/280
3. Likewise, for the 2nd fraction, since 70 × 4 = 280,
   30/70 = 30 × 4/70 × 4 = 120/280
4. Add the two like fractions:
   560/280 + 120/280 = 560 + 120/280 = 680/280
5. 680/280 simplified gives 17/7
6. So, 80/40 + 30/70 = 17/7
   In mixed form: 23/7

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