Add 21/42 and 18/56
21/42 + 18/56 is 23/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 56 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 42 × 4 = 168,
21/42 = 21 × 4/42 × 4 = 84/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
18/56 = 18 × 3/56 × 3 = 54/168 - Add the two like fractions:
84/168 + 54/168 = 84 + 54/168 = 138/168 - 138/168 simplified gives 23/28
- So, 21/42 + 18/56 = 23/28
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