Answers

Add 15/56 and 45/90

15/56 + 45/90 is 43/56.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 56 and 90 is 2520
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2520
2. For the 1st fraction, since 56 × 45 = 2520,
   15/56 = 15 × 45/56 × 45 = 675/2520
3. Likewise, for the 2nd fraction, since 90 × 28 = 2520,
   45/90 = 45 × 28/90 × 28 = 1260/2520
4. Add the two like fractions:
   675/2520 + 1260/2520 = 675 + 1260/2520 = 1935/2520
5. 1935/2520 simplified gives 43/56
6. So, 15/56 + 45/90 = 43/56

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