Answers

Add 70/60 and 21/90

1^st number: 1 10/60, 2^nd number: 21/90

70/60 + 21/90 is 7/5.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 60 and 90 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 60 × 3 = 180,
   70/60 = 70 × 3/60 × 3 = 210/180
3. Likewise, for the 2nd fraction, since 90 × 2 = 180,
   21/90 = 21 × 2/90 × 2 = 42/180
4. Add the two like fractions:
   210/180 + 42/180 = 210 + 42/180 = 252/180
5. 252/180 simplified gives 7/5
6. So, 70/60 + 21/90 = 7/5
   In mixed form: 12/5

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