Add 18/20 and 30/80
18/20 + 30/80 is 51/40.
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,
18/20 = 18 × 4/20 × 4 = 72/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
30/80 = 30 × 1/80 × 1 = 30/80 - Add the two like fractions:
72/80 + 30/80 = 72 + 30/80 = 102/80 - 102/80 simplified gives 51/40
- So, 18/20 + 30/80 = 51/40
In mixed form: 111/40
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