Add 28/20 and 54/84
1st number: 1 8/20, 2nd number: 54/84
28/20 + 54/84 is 143/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 20 × 21 = 420,
28/20 = 28 × 21/20 × 21 = 588/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
54/84 = 54 × 5/84 × 5 = 270/420 - Add the two like fractions:
588/420 + 270/420 = 588 + 270/420 = 858/420 - 858/420 simplified gives 143/70
- So, 28/20 + 54/84 = 143/70
In mixed form: 23/70
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