Add 21/30 and 28/32
21/30 + 28/32 is 63/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 32 is 480
Next, find the equivalent fraction of both fractional numbers with denominator 480 - For the 1st fraction, since 30 × 16 = 480,
21/30 = 21 × 16/30 × 16 = 336/480 - Likewise, for the 2nd fraction, since 32 × 15 = 480,
28/32 = 28 × 15/32 × 15 = 420/480 - Add the two like fractions:
336/480 + 420/480 = 336 + 420/480 = 756/480 - 756/480 simplified gives 63/40
- So, 21/30 + 28/32 = 63/40
In mixed form: 123/40
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