Add 28/84 and 56/70
28/84 + 56/70 is 17/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 70 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
28/84 = 28 × 5/84 × 5 = 140/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
56/70 = 56 × 6/70 × 6 = 336/420 - Add the two like fractions:
140/420 + 336/420 = 140 + 336/420 = 476/420 - 476/420 simplified gives 17/15
- So, 28/84 + 56/70 = 17/15
In mixed form: 12/15
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Related: 56/84+56/70