Add 20/72 and 25/80
20/72 + 25/80 is 85/144.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 72 × 10 = 720,
20/72 = 20 × 10/72 × 10 = 200/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
25/80 = 25 × 9/80 × 9 = 225/720 - Add the two like fractions:
200/720 + 225/720 = 200 + 225/720 = 425/720 - 425/720 simplified gives 85/144
- So, 20/72 + 25/80 = 85/144
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