Add 18/40 and 45/14
1st number: 18/40, 2nd number: 3 3/14
18/40 + 45/14 is 513/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 14 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 14 × 20 = 280,
45/14 = 45 × 20/14 × 20 = 900/280 - Add the two like fractions:
126/280 + 900/280 = 126 + 900/280 = 1026/280 - 1026/280 simplified gives 513/140
- So, 18/40 + 45/14 = 513/140
In mixed form: 393/140
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