Add 9/12 and 45/72
9/12 + 45/72 is 11/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 12 × 6 = 72,
9/12 = 9 × 6/12 × 6 = 54/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
45/72 = 45 × 1/72 × 1 = 45/72 - Add the two like fractions:
54/72 + 45/72 = 54 + 45/72 = 99/72 - 99/72 simplified gives 11/8
- So, 9/12 + 45/72 = 11/8
In mixed form: 13/8
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