Add 15/84 and 21/42
15/84 + 21/42 is 19/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
15/84 = 15 × 1/84 × 1 = 15/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
21/42 = 21 × 2/42 × 2 = 42/84 - Add the two like fractions:
15/84 + 42/84 = 15 + 42/84 = 57/84 - 57/84 simplified gives 19/28
- So, 15/84 + 21/42 = 19/28
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