Add 72/80 and 18/45
72/80 + 18/45 is 13/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 45 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 45 × 16 = 720,
18/45 = 18 × 16/45 × 16 = 288/720 - Add the two like fractions:
648/720 + 288/720 = 648 + 288/720 = 936/720 - 936/720 simplified gives 13/10
- So, 72/80 + 18/45 = 13/10
In mixed form: 13/10
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