Add 4/72 and 45/80
4/72 + 45/80 is 89/144.
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,
4/72 = 4 × 10/72 × 10 = 40/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
45/80 = 45 × 9/80 × 9 = 405/720 - Add the two like fractions:
40/720 + 405/720 = 40 + 405/720 = 445/720 - 445/720 simplified gives 89/144
- So, 4/72 + 45/80 = 89/144
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