Add 70/72 and 18/80
70/72 + 18/80 is 431/360.
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,
70/72 = 70 × 10/72 × 10 = 700/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
18/80 = 18 × 9/80 × 9 = 162/720 - Add the two like fractions:
700/720 + 162/720 = 700 + 162/720 = 862/720 - 862/720 simplified gives 431/360
- So, 70/72 + 18/80 = 431/360
In mixed form: 171/360
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