Add 21/56 and 7/8
21/56 + 7/8 is 5/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 8 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 56 × 1 = 56,
21/56 = 21 × 1/56 × 1 = 21/56 - Likewise, for the 2nd fraction, since 8 × 7 = 56,
7/8 = 7 × 7/8 × 7 = 49/56 - Add the two like fractions:
21/56 + 49/56 = 21 + 49/56 = 70/56 - 70/56 simplified gives 5/4
- So, 21/56 + 7/8 = 5/4
In mixed form: 11/4
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