Answers

Add 90/36 and 80/70

1^st number: 2 18/36, 2^nd number: 1 10/70

90/36 + 80/70 is 51/14.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 36 and 70 is 1260
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1260
2. For the 1st fraction, since 36 × 35 = 1260,
   90/36 = 90 × 35/36 × 35 = 3150/1260
3. Likewise, for the 2nd fraction, since 70 × 18 = 1260,
   80/70 = 80 × 18/70 × 18 = 1440/1260
4. Add the two like fractions:
   3150/1260 + 1440/1260 = 3150 + 1440/1260 = 4590/1260
5. 4590/1260 simplified gives 51/14
6. So, 90/36 + 80/70 = 51/14
   In mixed form: 39/14

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