Answers

Add 60/21 and 90/30

1^st number: 2 18/21, 2^nd number: 3 0/30

60/21 + 90/30 is 41/7.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 30 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 21 × 10 = 210,
   60/21 = 60 × 10/21 × 10 = 600/210
3. Likewise, for the 2nd fraction, since 30 × 7 = 210,
   90/30 = 90 × 7/30 × 7 = 630/210
4. Add the two like fractions:
   600/210 + 630/210 = 600 + 630/210 = 1230/210
5. 1230/210 simplified gives 41/7
6. So, 60/21 + 90/30 = 41/7
   In mixed form: 56/7

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