Add 12/80 and 20/90
12/80 + 20/90 is 67/180.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 90 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
12/80 = 12 × 9/80 × 9 = 108/720 - Likewise, for the 2nd fraction, since 90 × 8 = 720,
20/90 = 20 × 8/90 × 8 = 160/720 - Add the two like fractions:
108/720 + 160/720 = 108 + 160/720 = 268/720 - 268/720 simplified gives 67/180
- So, 12/80 + 20/90 = 67/180
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