Add 72/84 and 1/80
72/84 + 1/80 is 487/560.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 84 × 20 = 1680,
72/84 = 72 × 20/84 × 20 = 1440/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
1/80 = 1 × 21/80 × 21 = 21/1680 - Add the two like fractions:
1440/1680 + 21/1680 = 1440 + 21/1680 = 1461/1680 - 1461/1680 simplified gives 487/560
- So, 72/84 + 1/80 = 487/560
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