Add 1/7 and 3/9
1/7 + 3/9 is 10/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 9 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 7 × 9 = 63,
1/7 = 1 × 9/7 × 9 = 9/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
3/9 = 3 × 7/9 × 7 = 21/63 - Add the two like fractions:
9/63 + 21/63 = 9 + 21/63 = 30/63 - 30/63 simplified gives 10/21
- So, 1/7 + 3/9 = 10/21
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