Answers

Add 15/63 and 36/40

15/63 + 36/40 is 239/210.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 40 is 2520
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2520
2. For the 1st fraction, since 63 × 40 = 2520,
   15/63 = 15 × 40/63 × 40 = 600/2520
3. Likewise, for the 2nd fraction, since 40 × 63 = 2520,
   36/40 = 36 × 63/40 × 63 = 2268/2520
4. Add the two like fractions:
   600/2520 + 2268/2520 = 600 + 2268/2520 = 2868/2520
5. 2868/2520 simplified gives 239/210
6. So, 15/63 + 36/40 = 239/210
   In mixed form: 129/210

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