Add 15/40 and 20/18
1st number: 15/40, 2nd number: 1 2/18
15/40 + 20/18 is 107/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 18 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 18 × 20 = 360,
20/18 = 20 × 20/18 × 20 = 400/360 - Add the two like fractions:
135/360 + 400/360 = 135 + 400/360 = 535/360 - 535/360 simplified gives 107/72
- So, 15/40 + 20/18 = 107/72
In mixed form: 135/72
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