Add 45/28 and 30/21
1st number: 1 17/28, 2nd number: 1 9/21
45/28 + 30/21 is 85/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 28 × 3 = 84,
45/28 = 45 × 3/28 × 3 = 135/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
30/21 = 30 × 4/21 × 4 = 120/84 - Add the two like fractions:
135/84 + 120/84 = 135 + 120/84 = 255/84 - 255/84 simplified gives 85/28
- So, 45/28 + 30/21 = 85/28
In mixed form: 31/28
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