Add 75/84 and 21/5
1st number: 75/84, 2nd number: 4 1/5
75/84 + 21/5 is 713/140.
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,
75/84 = 75 × 5/84 × 5 = 375/420 - Likewise, for the 2nd fraction, since 5 × 84 = 420,
21/5 = 21 × 84/5 × 84 = 1764/420 - Add the two like fractions:
375/420 + 1764/420 = 375 + 1764/420 = 2139/420 - 2139/420 simplified gives 713/140
- So, 75/84 + 21/5 = 713/140
In mixed form: 513/140
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