Add 8/40 and 12/81
8/40 + 12/81 is 47/135.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 81 is 3240
Next, find the equivalent fraction of both fractional numbers with denominator 3240 - For the 1st fraction, since 40 × 81 = 3240,
8/40 = 8 × 81/40 × 81 = 648/3240 - Likewise, for the 2nd fraction, since 81 × 40 = 3240,
12/81 = 12 × 40/81 × 40 = 480/3240 - Add the two like fractions:
648/3240 + 480/3240 = 648 + 480/3240 = 1128/3240 - 1128/3240 simplified gives 47/135
- So, 8/40 + 12/81 = 47/135
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