Add 20/27 and 21/30
20/27 + 21/30 is 389/270.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 30 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 27 × 10 = 270,
20/27 = 20 × 10/27 × 10 = 200/270 - Likewise, for the 2nd fraction, since 30 × 9 = 270,
21/30 = 21 × 9/30 × 9 = 189/270 - Add the two like fractions:
200/270 + 189/270 = 200 + 189/270 = 389/270 - So, 20/27 + 21/30 = 389/270
In mixed form: 1119/270
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