Answers

Add 70/15 and 45/28

1^st number: 4 10/15, 2^nd number: 1 17/28

70/15 + 45/28 is 527/84.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 28 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 15 × 28 = 420,
   70/15 = 70 × 28/15 × 28 = 1960/420
3. Likewise, for the 2nd fraction, since 28 × 15 = 420,
   45/28 = 45 × 15/28 × 15 = 675/420
4. Add the two like fractions:
   1960/420 + 675/420 = 1960 + 675/420 = 2635/420
5. 2635/420 simplified gives 527/84
6. So, 70/15 + 45/28 = 527/84
   In mixed form: 623/84

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