Add 81/30 and 70/45
1st number: 2 21/30, 2nd number: 1 25/45
81/30 + 70/45 is 383/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
81/30 = 81 × 3/30 × 3 = 243/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
70/45 = 70 × 2/45 × 2 = 140/90 - Add the two like fractions:
243/90 + 140/90 = 243 + 140/90 = 383/90 - So, 81/30 + 70/45 = 383/90
In mixed form: 423/90
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