Add 15/84 and 20/5
1st number: 15/84, 2nd number: 4 0/5
15/84 + 20/5 is 117/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 5 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
15/84 = 15 × 5/84 × 5 = 75/420 - Likewise, for the 2nd fraction, since 5 × 84 = 420,
20/5 = 20 × 84/5 × 84 = 1680/420 - Add the two like fractions:
75/420 + 1680/420 = 75 + 1680/420 = 1755/420 - 1755/420 simplified gives 117/28
- So, 15/84 + 20/5 = 117/28
In mixed form: 45/28
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