Add 15/18 and 12/40
15/18 + 12/40 is 17/15.
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,
15/18 = 15 × 20/18 × 20 = 300/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
12/40 = 12 × 9/40 × 9 = 108/360 - Add the two like fractions:
300/360 + 108/360 = 300 + 108/360 = 408/360 - 408/360 simplified gives 17/15
- So, 15/18 + 12/40 = 17/15
In mixed form: 12/15
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