Add 30/15 and 7/84
1st number: 2 0/15, 2nd number: 7/84
30/15 + 7/84 is 25/12.
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,
30/15 = 30 × 28/15 × 28 = 840/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
7/84 = 7 × 5/84 × 5 = 35/420 - Add the two like fractions:
840/420 + 35/420 = 840 + 35/420 = 875/420 - 875/420 simplified gives 25/12
- So, 30/15 + 7/84 = 25/12
In mixed form: 21/12
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