Add 1/10 and 18/21
1/10 + 18/21 is 67/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 10 × 21 = 210,
1/10 = 1 × 21/10 × 21 = 21/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
18/21 = 18 × 10/21 × 10 = 180/210 - Add the two like fractions:
21/210 + 180/210 = 21 + 180/210 = 201/210 - 201/210 simplified gives 67/70
- So, 1/10 + 18/21 = 67/70
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