Add 18/15 and 54/84
1st number: 1 3/15, 2nd number: 54/84
18/15 + 54/84 is 129/70.
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,
18/15 = 18 × 28/15 × 28 = 504/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
54/84 = 54 × 5/84 × 5 = 270/420 - Add the two like fractions:
504/420 + 270/420 = 504 + 270/420 = 774/420 - 774/420 simplified gives 129/70
- So, 18/15 + 54/84 = 129/70
In mixed form: 159/70
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