Answers

Add 70/15 and 90/40

1^st number: 4 10/15, 2^nd number: 2 10/40

70/15 + 90/40 is 83/12.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 40 is 120
   
   Next, find the equivalent fraction of both fractional numbers with denominator 120
2. For the 1st fraction, since 15 × 8 = 120,
   70/15 = 70 × 8/15 × 8 = 560/120
3. Likewise, for the 2nd fraction, since 40 × 3 = 120,
   90/40 = 90 × 3/40 × 3 = 270/120
4. Add the two like fractions:
   560/120 + 270/120 = 560 + 270/120 = 830/120
5. 830/120 simplified gives 83/12
6. So, 70/15 + 90/40 = 83/12
   In mixed form: 611/12

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