Add 15/40 and 54/72
15/40 + 54/72 is 9/8.
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,
15/40 = 15 × 9/40 × 9 = 135/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
54/72 = 54 × 5/72 × 5 = 270/360 - Add the two like fractions:
135/360 + 270/360 = 135 + 270/360 = 405/360 - 405/360 simplified gives 9/8
- So, 15/40 + 54/72 = 9/8
In mixed form: 11/8
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