Answers

Add 18/28 and 4/63

18/28 + 4/63 is 89/126.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 63 is 252
2. For the 1st fraction, since 28 × 9 = 252,
   18/28 = 18 × 9/28 × 9 = 162/252
3. Likewise, for the 2nd fraction, since 63 × 4 = 252,
   4/63 = 4 × 4/63 × 4 = 16/252
4. Add the two fractions:
   162/252 + 16/252 = 162 + 16/252 = 178/252
5. After reducing the fraction, the answer is 89/126

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