Add 7/27 and 20/42
7/27 + 20/42 is 139/189.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 42 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 27 × 14 = 378,
7/27 = 7 × 14/27 × 14 = 98/378 - Likewise, for the 2nd fraction, since 42 × 9 = 378,
20/42 = 20 × 9/42 × 9 = 180/378 - Add the two like fractions:
98/378 + 180/378 = 98 + 180/378 = 278/378 - 278/378 simplified gives 139/189
- So, 7/27 + 20/42 = 139/189
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