Add 72/84 and 4/18
72/84 + 4/18 is 68/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 18 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 84 × 3 = 252,
72/84 = 72 × 3/84 × 3 = 216/252 - Likewise, for the 2nd fraction, since 18 × 14 = 252,
4/18 = 4 × 14/18 × 14 = 56/252 - Add the two like fractions:
216/252 + 56/252 = 216 + 56/252 = 272/252 - 272/252 simplified gives 68/63
- So, 72/84 + 4/18 = 68/63
In mixed form: 15/63
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