Add 18/84 and 21/10
1st number: 18/84, 2nd number: 2 1/10
18/84 + 21/10 is 81/35.
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,
18/84 = 18 × 5/84 × 5 = 90/420 - Likewise, for the 2nd fraction, since 10 × 42 = 420,
21/10 = 21 × 42/10 × 42 = 882/420 - Add the two like fractions:
90/420 + 882/420 = 90 + 882/420 = 972/420 - 972/420 simplified gives 81/35
- So, 18/84 + 21/10 = 81/35
In mixed form: 211/35
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