Answers

Add 90/15 and 75/70

1^st number: 6 0/15, 2^nd number: 1 5/70

90/15 + 75/70 is 99/14.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 70 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 15 × 14 = 210,
   90/15 = 90 × 14/15 × 14 = 1260/210
3. Likewise, for the 2nd fraction, since 70 × 3 = 210,
   75/70 = 75 × 3/70 × 3 = 225/210
4. Add the two like fractions:
   1260/210 + 225/210 = 1260 + 225/210 = 1485/210
5. 1485/210 simplified gives 99/14
6. So, 90/15 + 75/70 = 99/14
   In mixed form: 71/14

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