Add 12/80 and 18/81
12/80 + 18/81 is 67/180.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 81 is 6480
Next, find the equivalent fraction of both fractional numbers with denominator 6480 - For the 1st fraction, since 80 × 81 = 6480,
12/80 = 12 × 81/80 × 81 = 972/6480 - Likewise, for the 2nd fraction, since 81 × 80 = 6480,
18/81 = 18 × 80/81 × 80 = 1440/6480 - Add the two like fractions:
972/6480 + 1440/6480 = 972 + 1440/6480 = 2412/6480 - 2412/6480 simplified gives 67/180
- So, 12/80 + 18/81 = 67/180
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