Add 7/9 and 4/21
79 + 421 is 6163.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 21 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 9 × 7 = 63,
79 = 7 × 79 × 7 = 4963 - Likewise, for the 2nd fraction, since 21 × 3 = 63,
421 = 4 × 321 × 3 = 1263 - Add the two like fractions:
4963 + 1263 = 49 + 1263 = 6163 - So, 7/9 + 4/21 = 61/63
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