Add 45/20 and 18/28
1st number: 2 5/20, 2nd number: 18/28
45/20 + 18/28 is 81/28.
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,
45/20 = 45 × 7/20 × 7 = 315/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
18/28 = 18 × 5/28 × 5 = 90/140 - Add the two like fractions:
315/140 + 90/140 = 315 + 90/140 = 405/140 - 405/140 simplified gives 81/28
- So, 45/20 + 18/28 = 81/28
In mixed form: 225/28
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