Add 18/45 and 12/80
18/45 + 12/80 is 11/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 45 × 16 = 720,
18/45 = 18 × 16/45 × 16 = 288/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
12/80 = 12 × 9/80 × 9 = 108/720 - Add the two like fractions:
288/720 + 108/720 = 288 + 108/720 = 396/720 - 396/720 simplified gives 11/20
- So, 18/45 + 12/80 = 11/20
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