Add 5/20 and 18/72
5/20 + 18/72 is 1/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 20 × 18 = 360,
5/20 = 5 × 18/20 × 18 = 90/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
18/72 = 18 × 5/72 × 5 = 90/360 - Add the two like fractions:
90/360 + 90/360 = 90 + 90/360 = 180/360 - 180/360 simplified gives 1/2
- So, 5/20 + 18/72 = 1/2
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