Add 15/18 and 72/84
15/18 + 72/84 is 71/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 84 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 18 × 14 = 252,
15/18 = 15 × 14/18 × 14 = 210/252 - Likewise, for the 2nd fraction, since 84 × 3 = 252,
72/84 = 72 × 3/84 × 3 = 216/252 - Add the two like fractions:
210/252 + 216/252 = 210 + 216/252 = 426/252 - 426/252 simplified gives 71/42
- So, 15/18 + 72/84 = 71/42
In mixed form: 129/42
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