Add 20/24 and 21/28
20/24 + 21/28 is 19/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 28 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 24 × 7 = 168,
20/24 = 20 × 7/24 × 7 = 140/168 - Likewise, for the 2nd fraction, since 28 × 6 = 168,
21/28 = 21 × 6/28 × 6 = 126/168 - Add the two like fractions:
140/168 + 126/168 = 140 + 126/168 = 266/168 - 266/168 simplified gives 19/12
- So, 20/24 + 21/28 = 19/12
In mixed form: 17/12
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