Add 25/8 and 21/56, Solve 3 1/8 + 21/56 as a fraction

Add 25/8 and 21/56

1^st number: 3 1/8, 2^nd number: 21/56

25/8 + 21/56 is 7/2.

Find the least common denominator or LCM of the two denominators:
LCM of 8 and 56 is 56

Next, find the equivalent fraction of both fractional numbers with denominator 56
For the 1st fraction, since 8 × 7 = 56,
25/8 = 25 × 7/8 × 7 = 175/56
Likewise, for the 2nd fraction, since 56 × 1 = 56,
21/56 = 21 × 1/56 × 1 = 21/56
Add the two like fractions:
175/56 + 21/56 = 175 + 21/56 = 196/56
196/56 simplified gives 7/2
So, 25/8 + 21/56 = 7/2
In mixed form: 31/2

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