Add 12/30 and 70/81
12/30 + 70/81 is 512/405.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 81 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 30 × 27 = 810,
12/30 = 12 × 27/30 × 27 = 324/810 - Likewise, for the 2nd fraction, since 81 × 10 = 810,
70/81 = 70 × 10/81 × 10 = 700/810 - Add the two like fractions:
324/810 + 700/810 = 324 + 700/810 = 1024/810 - 1024/810 simplified gives 512/405
- So, 12/30 + 70/81 = 512/405
In mixed form: 1107/405
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