Add 7/42 and 20/56
7/42 + 20/56 is 11/21.
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,
7/42 = 7 × 4/42 × 4 = 28/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
20/56 = 20 × 3/56 × 3 = 60/168 - Add the two like fractions:
28/168 + 60/168 = 28 + 60/168 = 88/168 - 88/168 simplified gives 11/21
- So, 7/42 + 20/56 = 11/21
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