Add 18/28 and 8/20
18/28 + 8/20 is 73/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
18/28 = 18 × 5/28 × 5 = 90/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
8/20 = 8 × 7/20 × 7 = 56/140 - Add the two like fractions:
90/140 + 56/140 = 90 + 56/140 = 146/140 - 146/140 simplified gives 73/70
- So, 18/28 + 8/20 = 73/70
In mixed form: 13/70
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