Answers

Add 5/70 and 80/40

1^st number: 5/70, 2^nd number: 2 0/40

5/70 + 80/40 is 29/14.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 40 is 280
   
   Next, find the equivalent fraction of both fractional numbers with denominator 280
2. For the 1st fraction, since 70 × 4 = 280,
   5/70 = 5 × 4/70 × 4 = 20/280
3. Likewise, for the 2nd fraction, since 40 × 7 = 280,
   80/40 = 80 × 7/40 × 7 = 560/280
4. Add the two like fractions:
   20/280 + 560/280 = 20 + 560/280 = 580/280
5. 580/280 simplified gives 29/14
6. So, 5/70 + 80/40 = 29/14
   In mixed form: 21/14

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