Add 75/84 and 21/15
1st number: 75/84, 2nd number: 1 6/15
75/84 + 21/15 is 321/140.
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,
75/84 = 75 × 5/84 × 5 = 375/420 - Likewise, for the 2nd fraction, since 15 × 28 = 420,
21/15 = 21 × 28/15 × 28 = 588/420 - Add the two like fractions:
375/420 + 588/420 = 375 + 588/420 = 963/420 - 963/420 simplified gives 321/140
- So, 75/84 + 21/15 = 321/140
In mixed form: 241/140
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