Add 18/21 and 5/10
18/21 + 5/10 is 19/14.
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,
5/10 = 5 × 21/10 × 21 = 105/210 - Add the two like fractions:
180/210 + 105/210 = 180 + 105/210 = 285/210 - 285/210 simplified gives 19/14
- So, 18/21 + 5/10 = 19/14
In mixed form: 15/14
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