Add 28/7 and 21/80
1st number: 4 0/7, 2nd number: 21/80
28/7 + 21/80 is 341/80.
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,
28/7 = 28 × 80/7 × 80 = 2240/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
21/80 = 21 × 7/80 × 7 = 147/560 - Add the two like fractions:
2240/560 + 147/560 = 2240 + 147/560 = 2387/560 - 2387/560 simplified gives 341/80
- So, 28/7 + 21/80 = 341/80
In mixed form: 421/80
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