Add 8/20 and 45/80
8/20 + 45/80 is 77/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 20 × 4 = 80,
8/20 = 8 × 4/20 × 4 = 32/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
45/80 = 45 × 1/80 × 1 = 45/80 - Add the two like fractions:
32/80 + 45/80 = 32 + 45/80 = 77/80 - So, 8/20 + 45/80 = 77/80
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