Add 21/10 and 21/45
1st number: 2 1/10, 2nd number: 21/45
21/10 + 21/45 is 77/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 10 × 9 = 90,
21/10 = 21 × 9/10 × 9 = 189/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
21/45 = 21 × 2/45 × 2 = 42/90 - Add the two like fractions:
189/90 + 42/90 = 189 + 42/90 = 231/90 - 231/90 simplified gives 77/30
- So, 21/10 + 21/45 = 77/30
In mixed form: 217/30
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