Add 15/72 and 18/40
15/72 + 18/40 is 79/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
15/72 = 15 × 5/72 × 5 = 75/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
18/40 = 18 × 9/40 × 9 = 162/360 - Add the two like fractions:
75/360 + 162/360 = 75 + 162/360 = 237/360 - 237/360 simplified gives 79/120
- So, 15/72 + 18/40 = 79/120
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