Add 90/27 and 72/20
1st number: 3 9/27, 2nd number: 3 12/20
90/27 + 72/20 is 104/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 20 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 27 × 20 = 540,
90/27 = 90 × 20/27 × 20 = 1800/540 - Likewise, for the 2nd fraction, since 20 × 27 = 540,
72/20 = 72 × 27/20 × 27 = 1944/540 - Add the two like fractions:
1800/540 + 1944/540 = 1800 + 1944/540 = 3744/540 - 3744/540 simplified gives 104/15
- So, 90/27 + 72/20 = 104/15
In mixed form: 614/15
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