Add 21/28 and 20/32
21/28 + 20/32 is 11/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 32 is 224
Next, find the equivalent fraction of both fractional numbers with denominator 224 - For the 1st fraction, since 28 × 8 = 224,
21/28 = 21 × 8/28 × 8 = 168/224 - Likewise, for the 2nd fraction, since 32 × 7 = 224,
20/32 = 20 × 7/32 × 7 = 140/224 - Add the two like fractions:
168/224 + 140/224 = 168 + 140/224 = 308/224 - 308/224 simplified gives 11/8
- So, 21/28 + 20/32 = 11/8
In mixed form: 13/8
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