Add 18/20 and 75/84
18/20 + 75/84 is 251/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 20 × 21 = 420,
18/20 = 18 × 21/20 × 21 = 378/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
75/84 = 75 × 5/84 × 5 = 375/420 - Add the two like fractions:
378/420 + 375/420 = 378 + 375/420 = 753/420 - 753/420 simplified gives 251/140
- So, 18/20 + 75/84 = 251/140
In mixed form: 1111/140
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