Add 18/72 and 45/20
1st number: 18/72, 2nd number: 2 5/20
18/72 + 45/20 is 5/2.
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,
18/72 = 18 × 5/72 × 5 = 90/360 - Likewise, for the 2nd fraction, since 20 × 18 = 360,
45/20 = 45 × 18/20 × 18 = 810/360 - Add the two like fractions:
90/360 + 810/360 = 90 + 810/360 = 900/360 - 900/360 simplified gives 5/2
- So, 18/72 + 45/20 = 5/2
In mixed form: 21/2
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