Add 18/72 and 36/45
18/72 + 36/45 is 21/20.
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,
36/45 = 36 × 8/45 × 8 = 288/360 - Add the two like fractions:
90/360 + 288/360 = 90 + 288/360 = 378/360 - 378/360 simplified gives 21/20
- So, 18/72 + 36/45 = 21/20
In mixed form: 11/20
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