Add 15/45 and 9/20
15/45 + 9/20 is 47/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
15/45 = 15 × 4/45 × 4 = 60/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
9/20 = 9 × 9/20 × 9 = 81/180 - Add the two like fractions:
60/180 + 81/180 = 60 + 81/180 = 141/180 - 141/180 simplified gives 47/60
- So, 15/45 + 9/20 = 47/60
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