Add 18/21 and 84/10
1st number: 18/21, 2nd number: 8 4/10
18/21 + 84/10 is 324/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 10 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
18/21 = 18 × 10/21 × 10 = 180/210 - Likewise, for the 2nd fraction, since 10 × 21 = 210,
84/10 = 84 × 21/10 × 21 = 1764/210 - Add the two like fractions:
180/210 + 1764/210 = 180 + 1764/210 = 1944/210 - 1944/210 simplified gives 324/35
- So, 18/21 + 84/10 = 324/35
In mixed form: 99/35
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