Add 5/72 and 21/40
5/72 + 21/40 is 107/180.
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,
5/72 = 5 × 5/72 × 5 = 25/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
21/40 = 21 × 9/40 × 9 = 189/360 - Add the two like fractions:
25/360 + 189/360 = 25 + 189/360 = 214/360 - 214/360 simplified gives 107/180
- So, 5/72 + 21/40 = 107/180
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