Add 75/84 and 5/20
75/84 + 5/20 is 8/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 20 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 20 × 21 = 420,
5/20 = 5 × 21/20 × 21 = 105/420 - Add the two like fractions:
375/420 + 105/420 = 375 + 105/420 = 480/420 - 480/420 simplified gives 8/7
- So, 75/84 + 5/20 = 8/7
In mixed form: 11/7
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