Add 21/30 and 9/36
21/30 + 9/36 is 19/20.
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,
9/36 = 9 × 5/36 × 5 = 45/180 - Add the two like fractions:
126/180 + 45/180 = 126 + 45/180 = 171/180 - 171/180 simplified gives 19/20
- So, 21/30 + 9/36 = 19/20
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