Add 72/20 and 9/35
1st number: 3 12/20, 2nd number: 9/35
72/20 + 9/35 is 27/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 35 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
72/20 = 72 × 7/20 × 7 = 504/140 - Likewise, for the 2nd fraction, since 35 × 4 = 140,
9/35 = 9 × 4/35 × 4 = 36/140 - Add the two like fractions:
504/140 + 36/140 = 504 + 36/140 = 540/140 - 540/140 simplified gives 27/7
- So, 72/20 + 9/35 = 27/7
In mixed form: 36/7
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