Add 28/30 and 81/70
1st number: 28/30, 2nd number: 1 11/70
28/30 + 81/70 is 439/210.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
28/30 = 28 × 7/30 × 7 = 196/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
81/70 = 81 × 3/70 × 3 = 243/210 - Add the two like fractions:
196/210 + 243/210 = 196 + 243/210 = 439/210 - So, 28/30 + 81/70 = 439/210
In mixed form: 219/210
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