Add 72/60 and 40/81
1st number: 1 12/60, 2nd number: 40/81
72/60 + 40/81 is 686/405.
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,
72/60 = 72 × 27/60 × 27 = 1944/1620 - Likewise, for the 2nd fraction, since 81 × 20 = 1620,
40/81 = 40 × 20/81 × 20 = 800/1620 - Add the two like fractions:
1944/1620 + 800/1620 = 1944 + 800/1620 = 2744/1620 - 2744/1620 simplified gives 686/405
- So, 72/60 + 40/81 = 686/405
In mixed form: 1281/405
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