Add 18/28 and 20/45
18/28 + 20/45 is 137/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 45 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 28 × 45 = 1260,
18/28 = 18 × 45/28 × 45 = 810/1260 - Likewise, for the 2nd fraction, since 45 × 28 = 1260,
20/45 = 20 × 28/45 × 28 = 560/1260 - Add the two like fractions:
810/1260 + 560/1260 = 810 + 560/1260 = 1370/1260 - 1370/1260 simplified gives 137/126
- So, 18/28 + 20/45 = 137/126
In mixed form: 111/126
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