Add 12/42 and 27/80
12/42 + 27/80 is 349/560.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 42 × 40 = 1680,
12/42 = 12 × 40/42 × 40 = 480/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
27/80 = 27 × 21/80 × 21 = 567/1680 - Add the two like fractions:
480/1680 + 567/1680 = 480 + 567/1680 = 1047/1680 - 1047/1680 simplified gives 349/560
- So, 12/42 + 27/80 = 349/560
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