Add 21/75 and 81/84
21/75 + 81/84 is 871/700.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 84 is 2100
Next, find the equivalent fraction of both fractional numbers with denominator 2100 - For the 1st fraction, since 75 × 28 = 2100,
21/75 = 21 × 28/75 × 28 = 588/2100 - Likewise, for the 2nd fraction, since 84 × 25 = 2100,
81/84 = 81 × 25/84 × 25 = 2025/2100 - Add the two like fractions:
588/2100 + 2025/2100 = 588 + 2025/2100 = 2613/2100 - 2613/2100 simplified gives 871/700
- So, 21/75 + 81/84 = 871/700
In mixed form: 1171/700
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