Answers

Add 70/49 and 45/40

1^st number: 1 21/49, 2^nd number: 1 5/40

70/49 + 45/40 is 143/56.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 49 and 40 is 1960
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1960
2. For the 1st fraction, since 49 × 40 = 1960,
   70/49 = 70 × 40/49 × 40 = 2800/1960
3. Likewise, for the 2nd fraction, since 40 × 49 = 1960,
   45/40 = 45 × 49/40 × 49 = 2205/1960
4. Add the two like fractions:
   2800/1960 + 2205/1960 = 2800 + 2205/1960 = 5005/1960
5. 5005/1960 simplified gives 143/56
6. So, 70/49 + 45/40 = 143/56
   In mixed form: 231/56

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