Add 21/56 and 9/16, Solve 21/56 + 9/16 as a fraction

Add 21/56 and 9/16

21/56 + 9/16 is 15/16.

Find the least common denominator or LCM of the two denominators:
LCM of 56 and 16 is 112

Next, find the equivalent fraction of both fractional numbers with denominator 112
For the 1st fraction, since 56 × 2 = 112,
21/56 = 21 × 2/56 × 2 = 42/112
Likewise, for the 2nd fraction, since 16 × 7 = 112,
9/16 = 9 × 7/16 × 7 = 63/112
Add the two like fractions:
42/112 + 63/112 = 42 + 63/112 = 105/112
105/112 simplified gives 15/16
So, 21/56 + 9/16 = 15/16

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