Add 3/81 and 12/40
3/81 + 12/40 is 91/270.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 40 is 3240
Next, find the equivalent fraction of both fractional numbers with denominator 3240 - For the 1st fraction, since 81 × 40 = 3240,
3/81 = 3 × 40/81 × 40 = 120/3240 - Likewise, for the 2nd fraction, since 40 × 81 = 3240,
12/40 = 12 × 81/40 × 81 = 972/3240 - Add the two like fractions:
120/3240 + 972/3240 = 120 + 972/3240 = 1092/3240 - 1092/3240 simplified gives 91/270
- So, 3/81 + 12/40 = 91/270
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