Add 7/21 and 28/18
1st number: 7/21, 2nd number: 1 10/18
7/21 + 28/18 is 17/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 21 × 6 = 126,
7/21 = 7 × 6/21 × 6 = 42/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
28/18 = 28 × 7/18 × 7 = 196/126 - Add the two like fractions:
42/126 + 196/126 = 42 + 196/126 = 238/126 - 238/126 simplified gives 17/9
- So, 7/21 + 28/18 = 17/9
In mixed form: 18/9
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