Add 1/20 and 27/28
1/20 + 27/28 is 71/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
1/20 = 1 × 7/20 × 7 = 7/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
27/28 = 27 × 5/28 × 5 = 135/140 - Add the two like fractions:
7/140 + 135/140 = 7 + 135/140 = 142/140 - 142/140 simplified gives 71/70
- So, 1/20 + 27/28 = 71/70
In mixed form: 11/70
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