Add 72/40 and 40/81
1st number: 1 32/40, 2nd number: 40/81
72/40 + 40/81 is 929/405.
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,
72/40 = 72 × 81/40 × 81 = 5832/3240 - Likewise, for the 2nd fraction, since 81 × 40 = 3240,
40/81 = 40 × 40/81 × 40 = 1600/3240 - Add the two like fractions:
5832/3240 + 1600/3240 = 5832 + 1600/3240 = 7432/3240 - 7432/3240 simplified gives 929/405
- So, 72/40 + 40/81 = 929/405
In mixed form: 2119/405
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