Add 80/84 and 5/15
80/84 + 5/15 is 9/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 15 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
80/84 = 80 × 5/84 × 5 = 400/420 - Likewise, for the 2nd fraction, since 15 × 28 = 420,
5/15 = 5 × 28/15 × 28 = 140/420 - Add the two like fractions:
400/420 + 140/420 = 400 + 140/420 = 540/420 - 540/420 simplified gives 9/7
- So, 80/84 + 5/15 = 9/7
In mixed form: 12/7
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