Add 45/80 and 4/5
45/80 + 4/5 is 109/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 5 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
45/80 = 45 × 1/80 × 1 = 45/80 - Likewise, for the 2nd fraction, since 5 × 16 = 80,
4/5 = 4 × 16/5 × 16 = 64/80 - Add the two like fractions:
45/80 + 64/80 = 45 + 64/80 = 109/80 - So, 45/80 + 4/5 = 109/80
In mixed form: 129/80
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