Add 7/84 and 70/15
1st number: 7/84, 2nd number: 4 10/15
7/84 + 70/15 is 19/4.
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,
70/15 = 70 × 28/15 × 28 = 1960/420 - Add the two like fractions:
35/420 + 1960/420 = 35 + 1960/420 = 1995/420 - 1995/420 simplified gives 19/4
- So, 7/84 + 70/15 = 19/4
In mixed form: 43/4
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