Add 45/21 and 28/80
1st number: 2 3/21, 2nd number: 28/80
45/21 + 28/80 is 349/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 21 × 80 = 1680,
45/21 = 45 × 80/21 × 80 = 3600/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
28/80 = 28 × 21/80 × 21 = 588/1680 - Add the two like fractions:
3600/1680 + 588/1680 = 3600 + 588/1680 = 4188/1680 - 4188/1680 simplified gives 349/140
- So, 45/21 + 28/80 = 349/140
In mixed form: 269/140
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