Add 2/21 and 81/70
1st number: 2/21, 2nd number: 1 11/70
2/21 + 81/70 is 263/210.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
2/21 = 2 × 10/21 × 10 = 20/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
81/70 = 81 × 3/70 × 3 = 243/210 - Add the two like fractions:
20/210 + 243/210 = 20 + 243/210 = 263/210 - So, 2/21 + 81/70 = 263/210
In mixed form: 153/210
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