Add 20/24 and 4/21
20/24 + 4/21 is 43/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 21 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 21 × 8 = 168,
4/21 = 4 × 8/21 × 8 = 32/168 - Add the two like fractions:
140/168 + 32/168 = 140 + 32/168 = 172/168 - 172/168 simplified gives 43/42
- So, 20/24 + 4/21 = 43/42
In mixed form: 11/42
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