Answers

Add 20/30 and 84/40

1^st number: 20/30, 2^nd number: 2 4/40

20/30 + 84/40 is 83/30.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 40 is 120
   
   Next, find the equivalent fraction of both fractional numbers with denominator 120
2. For the 1st fraction, since 30 × 4 = 120,
   20/30 = 20 × 4/30 × 4 = 80/120
3. Likewise, for the 2nd fraction, since 40 × 3 = 120,
   84/40 = 84 × 3/40 × 3 = 252/120
4. Add the two like fractions:
   80/120 + 252/120 = 80 + 252/120 = 332/120
5. 332/120 simplified gives 83/30
6. So, 20/30 + 84/40 = 83/30
   In mixed form: 223/30

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