Add 28/81 and 4/40
28/81 + 4/40 is 361/810.
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,
28/81 = 28 × 40/81 × 40 = 1120/3240 - Likewise, for the 2nd fraction, since 40 × 81 = 3240,
4/40 = 4 × 81/40 × 81 = 324/3240 - Add the two like fractions:
1120/3240 + 324/3240 = 1120 + 324/3240 = 1444/3240 - 1444/3240 simplified gives 361/810
- So, 28/81 + 4/40 = 361/810
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