Add 45/56 and 20/42
45/56 + 20/42 is 215/168.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 42 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 56 × 3 = 168,
45/56 = 45 × 3/56 × 3 = 135/168 - Likewise, for the 2nd fraction, since 42 × 4 = 168,
20/42 = 20 × 4/42 × 4 = 80/168 - Add the two like fractions:
135/168 + 80/168 = 135 + 80/168 = 215/168 - So, 45/56 + 20/42 = 215/168
In mixed form: 147/168
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