Answers

Add 7/63 and 21/54

7/63 + 21/54 is 1/2.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 54 is 378
   
   Next, find the equivalent fraction of both fractional numbers with denominator 378
2. For the 1st fraction, since 63 × 6 = 378,
   7/63 = 7 × 6/63 × 6 = 42/378
3. Likewise, for the 2nd fraction, since 54 × 7 = 378,
   21/54 = 21 × 7/54 × 7 = 147/378
4. Add the two like fractions:
   42/378 + 147/378 = 42 + 147/378 = 189/378
5. 189/378 simplified gives 1/2
6. So, 7/63 + 21/54 = 1/2

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