Add 4/84 and 7/21
4/84 + 7/21 is 8/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
4/84 = 4 × 1/84 × 1 = 4/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
7/21 = 7 × 4/21 × 4 = 28/84 - Add the two like fractions:
4/84 + 28/84 = 4 + 28/84 = 32/84 - 32/84 simplified gives 8/21
- So, 4/84 + 7/21 = 8/21
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