Add 15/20 and 18/45
15/20 + 18/45 is 23/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
15/20 = 15 × 9/20 × 9 = 135/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
18/45 = 18 × 4/45 × 4 = 72/180 - Add the two like fractions:
135/180 + 72/180 = 135 + 72/180 = 207/180 - 207/180 simplified gives 23/20
- So, 15/20 + 18/45 = 23/20
In mixed form: 13/20
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