Add 7/15 and 72/84
7/15 + 72/84 is 139/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 15 × 28 = 420,
7/15 = 7 × 28/15 × 28 = 196/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
72/84 = 72 × 5/84 × 5 = 360/420 - Add the two like fractions:
196/420 + 360/420 = 196 + 360/420 = 556/420 - 556/420 simplified gives 139/105
- So, 7/15 + 72/84 = 139/105
In mixed form: 134/105
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