Add 7/84 and 40/15
1st number: 7/84, 2nd number: 2 10/15
7/84 + 40/15 is 11/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 15 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
7/84 = 7 × 5/84 × 5 = 35/420 - Likewise, for the 2nd fraction, since 15 × 28 = 420,
40/15 = 40 × 28/15 × 28 = 1120/420 - Add the two like fractions:
35/420 + 1120/420 = 35 + 1120/420 = 1155/420 - 1155/420 simplified gives 11/4
- So, 7/84 + 40/15 = 11/4
In mixed form: 23/4
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