Add 25/21 and 15/9
1st number: 1 4/21, 2nd number: 1 6/9
25/21 + 15/9 is 20/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 9 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 21 × 3 = 63,
25/21 = 25 × 3/21 × 3 = 75/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
15/9 = 15 × 7/9 × 7 = 105/63 - Add the two like fractions:
75/63 + 105/63 = 75 + 105/63 = 180/63 - 180/63 simplified gives 20/7
- So, 25/21 + 15/9 = 20/7
In mixed form: 26/7
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