Add 72/18 and 45/40
1st number: 4 0/18, 2nd number: 1 5/40
72/18 + 45/40 is 41/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 18 × 20 = 360,
72/18 = 72 × 20/18 × 20 = 1440/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
45/40 = 45 × 9/40 × 9 = 405/360 - Add the two like fractions:
1440/360 + 405/360 = 1440 + 405/360 = 1845/360 - 1845/360 simplified gives 41/8
- So, 72/18 + 45/40 = 41/8
In mixed form: 51/8
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