Add 21/30 and 15/16
21/30 + 15/16 is 131/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 16 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 30 × 8 = 240,
21/30 = 21 × 8/30 × 8 = 168/240 - Likewise, for the 2nd fraction, since 16 × 15 = 240,
15/16 = 15 × 15/16 × 15 = 225/240 - Add the two like fractions:
168/240 + 225/240 = 168 + 225/240 = 393/240 - 393/240 simplified gives 131/80
- So, 21/30 + 15/16 = 131/80
In mixed form: 151/80
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