Add 15/42 and 10/84
15/42 + 10/84 is 10/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
15/42 = 15 × 2/42 × 2 = 30/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
10/84 = 10 × 1/84 × 1 = 10/84 - Add the two like fractions:
30/84 + 10/84 = 30 + 10/84 = 40/84 - 40/84 simplified gives 10/21
- So, 15/42 + 10/84 = 10/21
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