Add 15/40 and 25/72
15/40 + 25/72 is 13/18.
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,
25/72 = 25 × 5/72 × 5 = 125/360 - Add the two like fractions:
135/360 + 125/360 = 135 + 125/360 = 260/360 - 260/360 simplified gives 13/18
- So, 15/40 + 25/72 = 13/18
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