Add 15/18 and 63/40
1st number: 15/18, 2nd number: 1 23/40
15/18 + 63/40 is 289/120.
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,
63/40 = 63 × 9/40 × 9 = 567/360 - Add the two like fractions:
300/360 + 567/360 = 300 + 567/360 = 867/360 - 867/360 simplified gives 289/120
- So, 15/18 + 63/40 = 289/120
In mixed form: 249/120
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