Add 21/63 and 4/9
21/63 + 4/9 is 7/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 9 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 63 × 1 = 63,
21/63 = 21 × 1/63 × 1 = 21/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
4/9 = 4 × 7/9 × 7 = 28/63 - Add the two like fractions:
21/63 + 28/63 = 21 + 28/63 = 49/63 - 49/63 simplified gives 7/9
- So, 21/63 + 4/9 = 7/9
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