Add 4/8 and 4/21
4/8 + 4/21 is 29/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 8 × 21 = 168,
4/8 = 4 × 21/8 × 21 = 84/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
4/21 = 4 × 8/21 × 8 = 32/168 - Add the two like fractions:
84/168 + 32/168 = 84 + 32/168 = 116/168 - 116/168 simplified gives 29/42
- So, 4/8 + 4/21 = 29/42
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