Add 42/20 and 72/27
1st number: 2 2/20, 2nd number: 2 18/27
42/20 + 72/27 is 143/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 27 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 20 × 27 = 540,
42/20 = 42 × 27/20 × 27 = 1134/540 - Likewise, for the 2nd fraction, since 27 × 20 = 540,
72/27 = 72 × 20/27 × 20 = 1440/540 - Add the two like fractions:
1134/540 + 1440/540 = 1134 + 1440/540 = 2574/540 - 2574/540 simplified gives 143/30
- So, 42/20 + 72/27 = 143/30
In mixed form: 423/30
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