Add 72/20 and 30/35
1st number: 3 12/20, 2nd number: 30/35
72/20 + 30/35 is 156/35.
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,
30/35 = 30 × 4/35 × 4 = 120/140 - Add the two like fractions:
504/140 + 120/140 = 504 + 120/140 = 624/140 - 624/140 simplified gives 156/35
- So, 72/20 + 30/35 = 156/35
In mixed form: 416/35
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