Answers

Add 2/80 and 70/63

1^st number: 2/80, 2^nd number: 1 7/63

2/80 + 70/63 is 409/360.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 63 is 5040
   
   Next, find the equivalent fraction of both fractional numbers with denominator 5040
2. For the 1st fraction, since 80 × 63 = 5040,
   2/80 = 2 × 63/80 × 63 = 126/5040
3. Likewise, for the 2nd fraction, since 63 × 80 = 5040,
   70/63 = 70 × 80/63 × 80 = 5600/5040
4. Add the two like fractions:
   126/5040 + 5600/5040 = 126 + 5600/5040 = 5726/5040
5. 5726/5040 simplified gives 409/360
6. So, 2/80 + 70/63 = 409/360
   In mixed form: 149/360

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