Add 81/70 and 1/30
1st number: 1 11/70, 2nd number: 1/30
81/70 + 1/30 is 25/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
81/70 = 81 × 3/70 × 3 = 243/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
1/30 = 1 × 7/30 × 7 = 7/210 - Add the two like fractions:
243/210 + 7/210 = 243 + 7/210 = 250/210 - 250/210 simplified gives 25/21
- So, 81/70 + 1/30 = 25/21
In mixed form: 14/21
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