Add 5/7 and 8/20
5/7 + 8/20 is 39/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 7 × 20 = 140,
5/7 = 5 × 20/7 × 20 = 100/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
8/20 = 8 × 7/20 × 7 = 56/140 - Add the two like fractions:
100/140 + 56/140 = 100 + 56/140 = 156/140 - 156/140 simplified gives 39/35
- So, 5/7 + 8/20 = 39/35
In mixed form: 14/35
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