Add 21/25 and 18/63
21/25 + 18/63 is 197/175.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 63 is 1575
Next, find the equivalent fraction of both fractional numbers with denominator 1575 - For the 1st fraction, since 25 × 63 = 1575,
21/25 = 21 × 63/25 × 63 = 1323/1575 - Likewise, for the 2nd fraction, since 63 × 25 = 1575,
18/63 = 18 × 25/63 × 25 = 450/1575 - Add the two like fractions:
1323/1575 + 450/1575 = 1323 + 450/1575 = 1773/1575 - 1773/1575 simplified gives 197/175
- So, 21/25 + 18/63 = 197/175
In mixed form: 122/175
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