Add 45/81 and 5/40
45/81 + 5/40 is 49/72.
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,
45/81 = 45 × 40/81 × 40 = 1800/3240 - Likewise, for the 2nd fraction, since 40 × 81 = 3240,
5/40 = 5 × 81/40 × 81 = 405/3240 - Add the two like fractions:
1800/3240 + 405/3240 = 1800 + 405/3240 = 2205/3240 - 2205/3240 simplified gives 49/72
- So, 45/81 + 5/40 = 49/72
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