Add 18/72 and 20/45
18/72 + 20/45 is 25/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 45 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
18/72 = 18 × 5/72 × 5 = 90/360 - Likewise, for the 2nd fraction, since 45 × 8 = 360,
20/45 = 20 × 8/45 × 8 = 160/360 - Add the two like fractions:
90/360 + 160/360 = 90 + 160/360 = 250/360 - 250/360 simplified gives 25/36
- So, 18/72 + 20/45 = 25/36
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