Add 21/27 and 90/28
1st number: 21/27, 2nd number: 3 6/28
21/27 + 90/28 is 503/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 28 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 27 × 28 = 756,
21/27 = 21 × 28/27 × 28 = 588/756 - Likewise, for the 2nd fraction, since 28 × 27 = 756,
90/28 = 90 × 27/28 × 27 = 2430/756 - Add the two like fractions:
588/756 + 2430/756 = 588 + 2430/756 = 3018/756 - 3018/756 simplified gives 503/126
- So, 21/27 + 90/28 = 503/126
In mixed form: 3125/126
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