Add 30/60 and 70/81
30/60 + 70/81 is 221/162.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 81 is 1620
Next, find the equivalent fraction of both fractional numbers with denominator 1620 - For the 1st fraction, since 60 × 27 = 1620,
30/60 = 30 × 27/60 × 27 = 810/1620 - Likewise, for the 2nd fraction, since 81 × 20 = 1620,
70/81 = 70 × 20/81 × 20 = 1400/1620 - Add the two like fractions:
810/1620 + 1400/1620 = 810 + 1400/1620 = 2210/1620 - 2210/1620 simplified gives 221/162
- So, 30/60 + 70/81 = 221/162
In mixed form: 159/162
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