Add 72/84 and 15/42
72/84 + 15/42 is 17/14.
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,
72/84 = 72 × 1/84 × 1 = 72/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
15/42 = 15 × 2/42 × 2 = 30/84 - Add the two like fractions:
72/84 + 30/84 = 72 + 30/84 = 102/84 - 102/84 simplified gives 17/14
- So, 72/84 + 15/42 = 17/14
In mixed form: 13/14
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