Add 81/7 and 28/80
1st number: 11 4/7, 2nd number: 28/80
81/7 + 28/80 is 1669/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 7 × 80 = 560,
81/7 = 81 × 80/7 × 80 = 6480/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
28/80 = 28 × 7/80 × 7 = 196/560 - Add the two like fractions:
6480/560 + 196/560 = 6480 + 196/560 = 6676/560 - 6676/560 simplified gives 1669/140
- So, 81/7 + 28/80 = 1669/140
In mixed form: 11129/140
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