Answers

Add 90/27 and 70/60

1^st number: 3 9/27, 2^nd number: 1 10/60

90/27 + 70/60 is 9/2.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 27 and 60 is 540
   
   Next, find the equivalent fraction of both fractional numbers with denominator 540
2. For the 1st fraction, since 27 × 20 = 540,
   90/27 = 90 × 20/27 × 20 = 1800/540
3. Likewise, for the 2nd fraction, since 60 × 9 = 540,
   70/60 = 70 × 9/60 × 9 = 630/540
4. Add the two like fractions:
   1800/540 + 630/540 = 1800 + 630/540 = 2430/540
5. 2430/540 simplified gives 9/2
6. So, 90/27 + 70/60 = 9/2
   In mixed form: 41/2

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