Add 28/80 and 36/45
28/80 + 36/45 is 23/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 45 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
28/80 = 28 × 9/80 × 9 = 252/720 - Likewise, for the 2nd fraction, since 45 × 16 = 720,
36/45 = 36 × 16/45 × 16 = 576/720 - Add the two like fractions:
252/720 + 576/720 = 252 + 576/720 = 828/720 - 828/720 simplified gives 23/20
- So, 28/80 + 36/45 = 23/20
In mixed form: 13/20
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