Add 72/84 and 9/42
72/84 + 9/42 is 15/14.
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,
9/42 = 9 × 2/42 × 2 = 18/84 - Add the two like fractions:
72/84 + 18/84 = 72 + 18/84 = 90/84 - 90/84 simplified gives 15/14
- So, 72/84 + 9/42 = 15/14
In mixed form: 11/14
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