Add 9/12 and 9/45
9/12 + 9/45 is 19/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 12 × 15 = 180,
9/12 = 9 × 15/12 × 15 = 135/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
9/45 = 9 × 4/45 × 4 = 36/180 - Add the two like fractions:
135/180 + 36/180 = 135 + 36/180 = 171/180 - 171/180 simplified gives 19/20
- So, 9/12 + 9/45 = 19/20
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