Add 18/40 and 20/28
18/40 + 20/28 is 163/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 28 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
18/40 = 18 × 7/40 × 7 = 126/280 - Likewise, for the 2nd fraction, since 28 × 10 = 280,
20/28 = 20 × 10/28 × 10 = 200/280 - Add the two like fractions:
126/280 + 200/280 = 126 + 200/280 = 326/280 - 326/280 simplified gives 163/140
- So, 18/40 + 20/28 = 163/140
In mixed form: 123/140
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