Answers

Add 90/21 and 60/27

1^st number: 4 6/21, 2^nd number: 2 6/27

90/21 + 60/27 is 410/63.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 27 is 189
   
   Next, find the equivalent fraction of both fractional numbers with denominator 189
2. For the 1st fraction, since 21 × 9 = 189,
   90/21 = 90 × 9/21 × 9 = 810/189
3. Likewise, for the 2nd fraction, since 27 × 7 = 189,
   60/27 = 60 × 7/27 × 7 = 420/189
4. Add the two like fractions:
   810/189 + 420/189 = 810 + 420/189 = 1230/189
5. 1230/189 simplified gives 410/63
6. So, 90/21 + 60/27 = 410/63
   In mixed form: 632/63

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