Add 21/30 and 20/36
21/30 + 20/36 is 113/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 30 × 6 = 180,
21/30 = 21 × 6/30 × 6 = 126/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
20/36 = 20 × 5/36 × 5 = 100/180 - Add the two like fractions:
126/180 + 100/180 = 126 + 100/180 = 226/180 - 226/180 simplified gives 113/90
- So, 21/30 + 20/36 = 113/90
In mixed form: 123/90
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