Add 72/18 and 15/40
1st number: 4 0/18, 2nd number: 15/40
72/18 + 15/40 is 35/8.
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,
15/40 = 15 × 9/40 × 9 = 135/360 - Add the two like fractions:
1440/360 + 135/360 = 1440 + 135/360 = 1575/360 - 1575/360 simplified gives 35/8
- So, 72/18 + 15/40 = 35/8
In mixed form: 43/8
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