Add 16/21 and 20/56
16/21 + 20/56 is 47/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 56 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
16/21 = 16 × 8/21 × 8 = 128/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
20/56 = 20 × 3/56 × 3 = 60/168 - Add the two like fractions:
128/168 + 60/168 = 128 + 60/168 = 188/168 - 188/168 simplified gives 47/42
- So, 16/21 + 20/56 = 47/42
In mixed form: 15/42
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