Add 40/70 and 28/81
40/70 + 28/81 is 520/567.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 81 is 5670
Next, find the equivalent fraction of both fractional numbers with denominator 5670 - For the 1st fraction, since 70 × 81 = 5670,
40/70 = 40 × 81/70 × 81 = 3240/5670 - Likewise, for the 2nd fraction, since 81 × 70 = 5670,
28/81 = 28 × 70/81 × 70 = 1960/5670 - Add the two like fractions:
3240/5670 + 1960/5670 = 3240 + 1960/5670 = 5200/5670 - 5200/5670 simplified gives 520/567
- So, 40/70 + 28/81 = 520/567
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