Add 20/5 and 12/28
1st number: 4 0/5, 2nd number: 12/28
20/5 + 12/28 is 31/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 5 × 28 = 140,
20/5 = 20 × 28/5 × 28 = 560/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
12/28 = 12 × 5/28 × 5 = 60/140 - Add the two like fractions:
560/140 + 60/140 = 560 + 60/140 = 620/140 - 620/140 simplified gives 31/7
- So, 20/5 + 12/28 = 31/7
In mixed form: 43/7
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