Add 28/40 and 45/18
1st number: 28/40, 2nd number: 2 9/18
28/40 + 45/18 is 16/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 18 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
28/40 = 28 × 9/40 × 9 = 252/360 - Likewise, for the 2nd fraction, since 18 × 20 = 360,
45/18 = 45 × 20/18 × 20 = 900/360 - Add the two like fractions:
252/360 + 900/360 = 252 + 900/360 = 1152/360 - 1152/360 simplified gives 16/5
- So, 28/40 + 45/18 = 16/5
In mixed form: 31/5
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