Add 72/42 and 27/80
1st number: 1 30/42, 2nd number: 27/80
72/42 + 27/80 is 1149/560.
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,
72/42 = 72 × 40/42 × 40 = 2880/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
27/80 = 27 × 21/80 × 21 = 567/1680 - Add the two like fractions:
2880/1680 + 567/1680 = 2880 + 567/1680 = 3447/1680 - 3447/1680 simplified gives 1149/560
- So, 72/42 + 27/80 = 1149/560
In mixed form: 229/560
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