Add 21/56 and 45/84
21/56 + 45/84 is 51/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 84 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 56 × 3 = 168,
21/56 = 21 × 3/56 × 3 = 63/168 - Likewise, for the 2nd fraction, since 84 × 2 = 168,
45/84 = 45 × 2/84 × 2 = 90/168 - Add the two like fractions:
63/168 + 90/168 = 63 + 90/168 = 153/168 - 153/168 simplified gives 51/56
- So, 21/56 + 45/84 = 51/56
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