Add 9/72 and 15/20
9/72 + 15/20 is 7/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 20 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
9/72 = 9 × 5/72 × 5 = 45/360 - Likewise, for the 2nd fraction, since 20 × 18 = 360,
15/20 = 15 × 18/20 × 18 = 270/360 - Add the two like fractions:
45/360 + 270/360 = 45 + 270/360 = 315/360 - 315/360 simplified gives 7/8
- So, 9/72 + 15/20 = 7/8
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