Answers

Add 15/84 and 36/40

15/84 + 36/40 is 151/140.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 40 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 84 × 10 = 840,
   15/84 = 15 × 10/84 × 10 = 150/840
3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
   36/40 = 36 × 21/40 × 21 = 756/840
4. Add the two like fractions:
   150/840 + 756/840 = 150 + 756/840 = 906/840
5. 906/840 simplified gives 151/140
6. So, 15/84 + 36/40 = 151/140
   In mixed form: 111/140

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