Add 18/40 and 45/72
18/40 + 45/72 is 43/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
18/40 = 18 × 9/40 × 9 = 162/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
45/72 = 45 × 5/72 × 5 = 225/360 - Add the two like fractions:
162/360 + 225/360 = 162 + 225/360 = 387/360 - 387/360 simplified gives 43/40
- So, 18/40 + 45/72 = 43/40
In mixed form: 13/40
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