Add 9/84 and 21/10
1st number: 9/84, 2nd number: 2 1/10
9/84 + 21/10 is 309/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 10 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
9/84 = 9 × 5/84 × 5 = 45/420 - Likewise, for the 2nd fraction, since 10 × 42 = 420,
21/10 = 21 × 42/10 × 42 = 882/420 - Add the two like fractions:
45/420 + 882/420 = 45 + 882/420 = 927/420 - 927/420 simplified gives 309/140
- So, 9/84 + 21/10 = 309/140
In mixed form: 229/140
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