Add 72/80 and 18/72
72/80 + 18/72 is 23/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 72 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
72/80 = 72 × 9/80 × 9 = 648/720 - Likewise, for the 2nd fraction, since 72 × 10 = 720,
18/72 = 18 × 10/72 × 10 = 180/720 - Add the two like fractions:
648/720 + 180/720 = 648 + 180/720 = 828/720 - 828/720 simplified gives 23/20
- So, 72/80 + 18/72 = 23/20
In mixed form: 13/20
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